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Swiss-Cheese action on the totalization of operads under the monoid - - PowerPoint PPT Presentation

Bimodules and Ibimodules Model Structures Main result and applications Swiss-Cheese action on the totalization of operads under the monoid actions operad Julien Ducoulombier Universit e paris 13 23/04/2015 Bimodules and Ibimodules Model


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Bimodules and Ibimodules Model Structures Main result and applications

Swiss-Cheese action on the totalization of operads under the monoid actions operad

Julien Ducoulombier

Universit´ e paris 13

23/04/2015

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Bimodules and Ibimodules Model Structures Main result and applications

Introduction:

Definition A semi-cosimplicial space X • is a family of spaces {X n}n≥0 equipped with maps di : X n → X n+1, for i ∈ {0, . . . , n + 1}, satisfying the relations djdi = didj−1 if i < j.

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Bimodules and Ibimodules Model Structures Main result and applications

Introduction:

Definition A semi-cosimplicial space X • is a family of spaces {X n}n≥0 equipped with maps di : X n → X n+1, for i ∈ {0, . . . , n + 1}, satisfying the relations djdi = didj−1 if i < j. Example The simplices ∆n := {(t1 ≤ · · · ≤ tn) | ti ∈ [0 ; 1]} with the cofaces: di : (t1, . . . , tn) →    (0, t1, . . . , tn) if i = 0 (t1, . . . , ti, ti, . . . , tn) if i ∈ {1 . . . , n} (t1, . . . , tn, 1) if i = n + 1

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Bimodules and Ibimodules Model Structures Main result and applications

Introduction:

Definition A semi-cosimplicial space X • is a family of spaces {X n}n≥0 equipped with maps di : X n → X n+1, for i ∈ {0, . . . , n + 1}, satisfying the relations djdi = didj−1 if i < j. Example The simplices ∆n := {(t1 ≤ · · · ≤ tn) | ti ∈ [0 ; 1]} with the cofaces: di : (t1, . . . , tn) →    (0, t1, . . . , tn) if i = 0 (t1, . . . , ti, ti, . . . , tn) if i ∈ {1 . . . , n} (t1, . . . , tn, 1) if i = n + 1 Definition The semi-totalization, sTot(X), is the space of natural transformations from ∆• to X •.

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Bimodules and Ibimodules Model Structures Main result and applications

Introduction:

Q1 : Structure on X • such that sTot(X •) is an En-space?

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Bimodules and Ibimodules Model Structures Main result and applications

Introduction:

Q1 : Structure on X • such that sTot(X •) is an En-space? ◮ McClure-Smith (2004)

  • E1

⇐ X • is equipped with maps: η : X n × X m → X n+m satisfying η(d|x|+1x ; y) = η(x ; d0y).

  • E2

⇐ X • comes from a multiplicative operad.

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Bimodules and Ibimodules Model Structures Main result and applications

Introduction:

Q1 : Structure on X • such that sTot(X •) is an En-space? ◮ McClure-Smith (2004) Q2: Can we identify the loop spaces?

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Bimodules and Ibimodules Model Structures Main result and applications

Introduction:

Q1 : Structure on X • such that sTot(X •) is an En-space? ◮ McClure-Smith (2004) Q2: Can we identify the loop spaces? ◮ Turchin and independently Dwyer-Hess (2012)

E1 ⇒ sTot(X •) ≃ ΩBimodh

As>0(As>0 ; X).

E2 ⇒ sTot(X •) ≃ Ω2Operadh(As>0 ; X).

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Bimodules and Ibimodules Model Structures Main result and applications

Introduction:

Q1 : Structure on X • such that sTot(X •) is an En-space? ◮ McClure-Smith (2004) Q2: Can we identify the loop spaces? ◮ Turchin and independently Dwyer-Hess (2012)

E2 ⇒ sTot(X •) ≃ Ω2Operadh(As>0 ; X).

Q3: The Gerstenhaber structures on H∗(sTot(X)) and HH∗(X). ◮ Bousfield , Voronov , Gerstenhaber , Salvatore , Sakai

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Bimodules and Ibimodules Model Structures Main result and applications

Introduction:

Q1 : Structure on X • such that sTot(X •) is an En-space? ◮ McClure-Smith (2004) Q2: Can we identify the loop spaces? ◮ Turchin and independently Dwyer-Hess (2012)

E2 ⇒ sTot(X •) ≃ Ω2Operadh(As>0 ; X).

Q3: The Gerstenhaber structures on H∗(sTot(X)) and HH∗(X). ◮ Bousfield , Voronov , Gerstenhaber , Salvatore , Sakai Theorem (D) If a pair of semi-cosimplicial spaces (Xc ; Xo) arises from a coloured

  • perad X under the monoid actions operad then the pair

(sTot(Xc) ; sTot(Xo)) is weakly equivalent to the SC2-space:

  • Ω2Operadh(As>0 ; Xc) ; Ω2(Operadh(As>0 ; Xc); Operadh

{o ; c}(Act>0 ; X)

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Bimodules and Ibimodules Model Structures Main result and applications

Plan

1

Bimodules and Ibimodules

2

Model Structures

3

Main result and applications

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Bimodules and Ibimodules Model Structures Main result and applications

”Classical” operads

Definition An operad O is a collection of spaces {O(n)}n≥0 endowed with operations:

  • i : O(n) × O(m) → O(n + m − 1)

and a distinguished element ∗ ∈ O(1) satisfying some axioms.

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Bimodules and Ibimodules Model Structures Main result and applications

”Classical” operads

Definition An operad O is a collection of spaces {O(n)}n≥0 endowed with operations:

  • i : O(n) × O(m) → O(n + m − 1)

and a distinguished element ∗ ∈ O(1) satisfying some axioms.

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Bimodules and Ibimodules Model Structures Main result and applications

”Classical” operads

Definition An operad O is a collection of spaces {O(n)}n≥0 endowed with operations:

  • i : O(n) × O(m) → O(n + m − 1)

and a distinguished element ∗ ∈ O(1) satisfying some axioms. Definition An O-space is a topological space X equipped with maps: O(n) × X ×n → X.

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Bimodules and Ibimodules Model Structures Main result and applications

”Classical” operads

Definition An operad O is a collection of spaces {O(n)}n≥0 endowed with operations:

  • i : O(n) × O(m) → O(n + m − 1)

and a distinguished element ∗ ∈ O(1) satisfying some axioms. Definition An O-space is a topological space X equipped with maps: O(n) × X ×n → X. Example: The associative operad As

As(n) = ∗n for n ≥ 0 with the obvious operadic composition

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Bimodules and Ibimodules Model Structures Main result and applications

”Classical” operads

Definition An operad O is a collection of spaces {O(n)}n≥0 endowed with operations:

  • i : O(n) × O(m) → O(n + m − 1)

and a distinguished element ∗ ∈ O(1) satisfying some axioms. Definition An O-space is a topological space X equipped with maps: O(n) × X ×n → X. Example: The strict associative operad As>0

As>0(n) = ∗n for n > 0 As>0(0) = ∅ with the obvious operadic composition

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Bimodules and Ibimodules Model Structures Main result and applications

”Classical” operads

Example: The little disk operad Cd

Cd(n) is the configurations of n nonoverlapping little disks of dimension d labelled by {1, . . . , n} in the unit disk. For instance a point in C2(3) is the following:

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Bimodules and Ibimodules Model Structures Main result and applications

”Classical” operads

Example: The little disk operad Cd

Cd(n) is the configurations of n nonoverlapping little disks of dimension d labelled by {1, . . . , n} in the unit disk. The operadic composition:

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Bimodules and Ibimodules Model Structures Main result and applications

”Classical” operads

Example: The little disk operad Cd

Cd(n) is the configurations of n nonoverlapping little disks of dimension d labelled by {1, . . . , n} in the unit disk. The operadic composition:

Remark For any pointed topological space X, ΩdX is a Cd-space.

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Bimodules and Ibimodules Model Structures Main result and applications

Coloured operads

Definition A coloured operad over the set of colours S, or S-operad, is given by:

a family of spaces {O(s1, . . . , sn; sn+1)}n∈N

si∈S

an operadic composition ◦i: O(s1, .., sn; sn+1) × O(s′

1, .., s′ m; si) → O(s1, .., si−1, s′ 1, .., s′ m, si+1, .., sn; sn+1)

distinguished elements {∗s ∈ O(s; s)}.

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Bimodules and Ibimodules Model Structures Main result and applications

Coloured operads

Definition A coloured operad over the set of colours S, or S-operad, is given by:

a family of spaces {O(s1, . . . , sn; sn+1)}n∈N

si∈S

an operadic composition ◦i: O(s1, .., sn; sn+1) × O(s′

1, .., s′ m; si) → O(s1, .., si−1, s′ 1, .., s′ m, si+1, .., sn; sn+1)

distinguished elements {∗s ∈ O(s; s)}.

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Bimodules and Ibimodules Model Structures Main result and applications

Coloured operads

Definition A coloured operad over the set of colours S, or S-operad, is given by:

a family of spaces {O(s1, . . . , sn; sn+1)}n∈N

si∈S

an operadic composition ◦i: O(s1, .., sn; sn+1) × O(s′

1, .., s′ m; si) → O(s1, .., si−1, s′ 1, .., s′ m, si+1, .., sn; sn+1)

distinguished elements {∗s ∈ O(s; s)}.

Definition An O-space is a family of spaces {Xs}s∈S with maps O(s1, . . . , sn; sn+1) × Xs1 × · · · × Xsn → Xsn+1

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Bimodules and Ibimodules Model Structures Main result and applications

Coloured operads

Definition A coloured operad over the set of colours S, or S-operad, is given by:

a family of spaces {O(s1, . . . , sn; sn+1)}n∈N

si∈S

an operadic composition ◦i: O(s1, .., sn; sn+1) × O(s′

1, .., s′ m; si) → O(s1, .., si−1, s′ 1, .., s′ m, si+1, .., sn; sn+1)

distinguished elements {∗s ∈ O(s; s)}.

Definition An O-space is a family of spaces {Xs}s∈S with maps O(s1, . . . , sn; sn+1) × Xs1 × · · · × Xsn → Xsn+1 If S = {o ; c} then On

c = O(n; c) = O(c, . . . , c n

; c) and On

  • = O(n + 1; o) = O(c, . . . , c

n

, o; o)

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Bimodules and Ibimodules Model Structures Main result and applications

Coloured operads

Example: The {o; c}-operad of unital monoid actions Act

Act(n; c) = ∗n;c for n ≥ 0 Act(n; o) = ∗n;o for n > 0 the empty set otherwise with the obvious operadic composition

n−1

  • n
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Bimodules and Ibimodules Model Structures Main result and applications

Coloured operads

Example: The {o; c}-operad of unital monoid actions Act

Act(n; c) = ∗n;c for n ≥ 0 Act(n; o) = ∗n;o for n > 0 the empty set otherwise with the obvious operadic composition

/ ∈ Act

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Bimodules and Ibimodules Model Structures Main result and applications

Coloured operads

Example: The {o; c}-operad of unital monoid actions Act

Act(n; c) = ∗n;c for n ≥ 0 Act(n; o) = ∗n;o for n > 0 the empty set otherwise with the obvious operadic composition

/ ∈ Act Xc Xo Topological monoid Left module

  • ver Xc
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Bimodules and Ibimodules Model Structures Main result and applications

Coloured operads

Example: The {o; c}-operad of unital monoid actions Act

Act(n; c) = ∗n;c for n ≥ 0 Act(n; o) = ∗n;o for n > 0 the empty set otherwise with the obvious operadic composition

/ ∈ Act Definition An {o; c}-operad O is pointed if there is a map of operads from Act to O.

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Bimodules and Ibimodules Model Structures Main result and applications

Coloured operads

Example: The {o; c}-operad of unital monoid actions Act

Act(n; c) = ∗n;c for n ≥ 0 Act(n; o) = ∗n;o for n > 0 the empty set otherwise with the obvious operadic composition

/ ∈ Act Definition An {o; c}-operad O is pointed if there is a map of operads from Act to O. Example: The {o; c}-operad of monoid actions Act>0

Act>0(n; c) = ∗n;c for n > 0 Act>0(n; o) = ∗n;o for n > 0 the empty set otherwise with the obvious operadic composition

/ ∈ Act>0

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Bimodules and Ibimodules Model Structures Main result and applications

Coloured operads

Example: The Swiss-Cheese operad SCd

If the output is ”close” then all the inputs are also ”close” and SCd(c, . . . , c

n

; c) = Cd(n). If the output is ”open” then we denote by SCd(n1, n2; o) the space of configurations of nonoverlapping n1 little disks and n2 upper semidisks labeled by {1, . . . , n1 + n2} in the unit upper semidisk so that the semidisks are all centered about the diameter of the unit semidisk.

SC2(1, 2; o)

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Bimodules and Ibimodules Model Structures Main result and applications

Coloured operads

Example: The Swiss-Cheese operad SCd

If the output is ”close” then all the inputs are also ”close” and SCd(c, . . . , c

n

; c) = Cd(n). If the output is ”open” then we denote by SCd(n1, n2; o) the space of configurations of nonoverlapping n1 little disks and n2 upper semidisks labeled by {1, . . . , n1 + n2} in the unit upper semidisk so that the semidisks are all centered about the diameter of the unit semidisk.

SC2(1, 2; o) SC2(2; c) SC2(2, 2; o)

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Bimodules and Ibimodules Model Structures Main result and applications

Coloured operads

Example: The Swiss-Cheese operad SCd

If the output is ”close” then all the inputs are also ”close” and SCd(c, . . . , c

n

; c) = Cd(n). If the output is ”open” then we denote by SCd(n1, n2; o) the space of configurations of nonoverlapping n1 little disks and n2 upper semidisks labeled by {1, . . . , n1 + n2} in the unit upper semidisk so that the semidisks are all centered about the diameter of the unit semidisk.

SC2(1, 2; o) SC2(1, 2; o) SC2(2, 3; o)

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Bimodules and Ibimodules Model Structures Main result and applications

Coloured operads

Example: The Swiss-Cheese operad SCd

If the output is ”close” then all the inputs are also ”close” and SCd(c, . . . , c

n

; c) = Cd(n). If the output is ”open” then we denote by SCd(n1, n2; o) the space of configurations of nonoverlapping n1 little disks and n2 upper semidisks labeled by {1, . . . , n1 + n2} in the unit upper semidisk so that the semidisks are all centered about the diameter of the unit semidisk.

Remark If X is a pointed space and A is a subspace containing the based point then Ωd(X; A) =

  • f : [0; 1]d → X
  • f (∂[0; 1]d) ⊂ A

if td = 0 f (∂[0; 1]d) = ∗

  • therwise
  • and the pair (ΩdX; Ωd(X; A)) is an algebra over SCd.
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Bimodules and Ibimodules Model Structures Main result and applications

Bimodules over an S-operad

Definition A bimodule M over an S-operad O, or O-bimodule, is given by

a family of spaces {M(s1, . . . , sn; sn+1)}n∈N

si∈S

right operations ◦i: M(s1, .., sn; sn+1) × O(s′

1, .., s′ m; si) → M(s1, .., si−1, s′ 1, .., s′ m, si+1, .., sn; sn+1)

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Bimodules and Ibimodules Model Structures Main result and applications

Bimodules over an S-operad

Definition A bimodule M over an S-operad O, or O-bimodule, is given by

a family of spaces {M(s1, . . . , sn; sn+1)}n∈N

si∈S

right operations ◦i: M(s1, .., sn; sn+1) × O(s′

1, .., s′ m; si) → M(s1, .., si−1, s′ 1, .., s′ m, si+1, .., sn; sn+1)

left operations γl: O(s1, .., sn; sn+1)×M(s1

1, .., s1 p1; s1)×..×M(sn 1 , .., sn pn; sn) → M(s1 1, .., sn pn; sn+1)

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Bimodules and Ibimodules Model Structures Main result and applications

Bimodules over an S-operad

Definition A bimodule M over an S-operad O, or O-bimodule, is given by

a family of spaces {M(s1, . . . , sn; sn+1)}n∈N

si∈S

right operations ◦i: M(s1, .., sn; sn+1) × O(s′

1, .., s′ m; si) → M(s1, .., si−1, s′ 1, .., s′ m, si+1, .., sn; sn+1)

left operations γl: O(s1, .., sn; sn+1)×M(s1

1, .., s1 p1; s1)×..×M(sn 1 , .., sn pn; sn) → M(s1 1, .., sn pn; sn+1)

satisfying some axioms. Example If η : Act → O is a map of {o; c}-operads then η is also a map of Act>0-bimodules.

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Bimodules and Ibimodules Model Structures Main result and applications

Infinitesimal bimodules over an S-operad

Definition An infinitesimal bimodule M over an S-operad O, or O-Ibimodule, is:

a family of spaces {M(s1, . . . , sn; sn+1)}n∈N

si∈S

right operations ◦i: M(s1, .., sn; sn+1) × O(s′

1, .., s′ m; si) → M(s1, .., si−1, s′ 1, .., s′ m, si+1, .., sn; sn+1)

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Bimodules and Ibimodules Model Structures Main result and applications

Infinitesimal bimodules over an S-operad

Definition An infinitesimal bimodule M over an S-operad O, or O-Ibimodule, is:

a family of spaces {M(s1, . . . , sn; sn+1)}n∈N

si∈S

right operations ◦i: M(s1, .., sn; sn+1) × O(s′

1, .., s′ m; si) → M(s1, .., si−1, s′ 1, .., s′ m, si+1, .., sn; sn+1)

left operations ◦i: O(s1, .., sn; sn+1) × M(s′

1, .., s′ m; si) → M(s1, .., si−1, s′ 1, .., s′ m, si+1, .., sn; sn+1)

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Bimodules and Ibimodules Model Structures Main result and applications

Infinitesimal bimodules over an S-operad

Definition An infinitesimal bimodule M over an S-operad O, or O-Ibimodule, is:

a family of spaces {M(s1, . . . , sn; sn+1)}n∈N

si∈S

right operations ◦i: M(s1, .., sn; sn+1) × O(s′

1, .., s′ m; si) → M(s1, .., si−1, s′ 1, .., s′ m, si+1, .., sn; sn+1)

left operations ◦i: O(s1, .., sn; sn+1) × M(s′

1, .., s′ m; si) → M(s1, .., si−1, s′ 1, .., s′ m, si+1, .., sn; sn+1)

satisfying some axioims. Example If η : Act → M is a map between Act>0-bimodules then M is also an Act>0-Ibimodule.

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Bimodules and Ibimodules Model Structures Main result and applications

Infinitesimal bimodules over an S-operad

Theorem (D) If M is an Act>0-Ibimodule then M•

c := {Mn c } and M•

  • := {Mn
  • } are

semi-cosimplicial spaces. Furthermore there exists a semi-cosimplicial map h : Mc → Mo.

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Bimodules and Ibimodules Model Structures Main result and applications

Infinitesimal bimodules over an S-operad

Theorem (D) If M is an Act>0-Ibimodule then M•

c := {Mn c } and M•

  • := {Mn
  • } are

semi-cosimplicial spaces. Furthermore there exists a semi-cosimplicial map h : Mc → Mo.

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Bimodules and Ibimodules Model Structures Main result and applications

Infinitesimal bimodules over an S-operad

Theorem (D) If M is an Act>0-Ibimodule then M•

c := {Mn c } and M•

  • := {Mn
  • } are

semi-cosimplicial spaces. Furthermore there exists a semi-cosimplicial map h : Mc → Mo. ∈ Act>0(2; c)

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Bimodules and Ibimodules Model Structures Main result and applications

Infinitesimal bimodules over an S-operad

Theorem (D) If M is an Act>0-Ibimodule then M•

c := {Mn c } and M•

  • := {Mn
  • } are

semi-cosimplicial spaces. Furthermore there exists a semi-cosimplicial map h : Mc → Mo.

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Bimodules and Ibimodules Model Structures Main result and applications

Infinitesimal bimodules over an S-operad

Theorem (D) If M is an Act>0-Ibimodule then M•

c := {Mn c } and M•

  • := {Mn
  • } are

semi-cosimplicial spaces. Furthermore there exists a semi-cosimplicial map h : Mc → Mo.

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Bimodules and Ibimodules Model Structures Main result and applications

Infinitesimal bimodules over an S-operad

Theorem (D) If M is an Act>0-Ibimodule then M•

c := {Mn c } and M•

  • := {Mn
  • } are

semi-cosimplicial spaces. Furthermore there exists a semi-cosimplicial map h : Mc → Mo. ← n operations {d1, . . . , dn}

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Bimodules and Ibimodules Model Structures Main result and applications

Infinitesimal bimodules over an S-operad

Theorem (D) If M is an Act>0-Ibimodule then M•

c := {Mn c } and M•

  • := {Mn
  • } are

semi-cosimplicial spaces. Furthermore there exists a semi-cosimplicial map h : Mc → Mo. ← n operations {d1, . . . , dn} ← 2 operations {d0, dn+1}

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Bimodules and Ibimodules Model Structures Main result and applications

Infinitesimal bimodules over an S-operad

Theorem (D) If M is an Act>0-Ibimodule then M•

c := {Mn c } and M•

  • := {Mn
  • } are

semi-cosimplicial spaces. Furthermore there exists a semi-cosimplicial map h : Mc → Mo.

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SLIDE 47

Bimodules and Ibimodules Model Structures Main result and applications

Infinitesimal bimodules over an S-operad

Theorem (D) If M is an Act>0-Ibimodule then M•

c := {Mn c } and M•

  • := {Mn
  • } are

semi-cosimplicial spaces. Furthermore there exists a semi-cosimplicial map h : Mc → Mo.

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SLIDE 48

Bimodules and Ibimodules Model Structures Main result and applications

Infinitesimal bimodules over an S-operad

Theorem (D) If M is an Act>0-Ibimodule then M•

c := {Mn c } and M•

  • := {Mn
  • } are

semi-cosimplicial spaces. Furthermore there exists a semi-cosimplicial map h : Mc → Mo.

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Bimodules and Ibimodules Model Structures Main result and applications

Infinitesimal bimodules over an S-operad

Theorem (D) If M is an Act>0-Ibimodule then M•

c := {Mn c } and M•

  • := {Mn
  • } are

semi-cosimplicial spaces. Furthermore there exists a semi-cosimplicial map h : Mc → Mo. ∈ Act>0(2; o)

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Bimodules and Ibimodules Model Structures Main result and applications

Infinitesimal bimodules over an S-operad

Theorem (D) If M is an Act>0-Ibimodule then M•

c := {Mn c } and M•

  • := {Mn
  • } are

semi-cosimplicial spaces. Furthermore there exists a semi-cosimplicial map h : Mc → Mo. ← n + 1 operations {d1, . . . , dn+1}

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Bimodules and Ibimodules Model Structures Main result and applications

Infinitesimal bimodules over an S-operad

Theorem (D) If M is an Act>0-Ibimodule then M•

c := {Mn c } and M•

  • := {Mn
  • } are

semi-cosimplicial spaces. Furthermore there exists a semi-cosimplicial map h : Mc → Mo. ← n + 1 operations {d1, . . . , dn+1} ← 1 operation d0

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Bimodules and Ibimodules Model Structures Main result and applications

Infinitesimal bimodules over an S-operad

Theorem (D) If M is an Act>0-Ibimodule then M•

c := {Mn c } and M•

  • := {Mn
  • } are

semi-cosimplicial spaces. Furthermore there exists a semi-cosimplicial map h : Mc → Mo.

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SLIDE 53

Bimodules and Ibimodules Model Structures Main result and applications

Infinitesimal bimodules over an S-operad

Theorem (D) If M is an Act>0-Ibimodule then M•

c := {Mn c } and M•

  • := {Mn
  • } are

semi-cosimplicial spaces. Furthermore there exists a semi-cosimplicial map h : Mc → Mo. ∈ Mn

  • = M(n + 1; o)
slide-54
SLIDE 54

Bimodules and Ibimodules Model Structures Main result and applications

Infinitesimal bimodules over an S-operad

Theorem (D) If M is an Act>0-Ibimodule then M•

c := {Mn c } and M•

  • := {Mn
  • } are

semi-cosimplicial spaces. Furthermore there exists a semi-cosimplicial map h : Mc → Mo. Corollary 1 If η : Act → M is a map of Act>0-bimodules then:

there exists a product: Mn

c × Mm c → Mn+m c

and an action: Mn

c × Mm

  • → Mn+m
slide-55
SLIDE 55

Bimodules and Ibimodules Model Structures Main result and applications

Infinitesimal bimodules over an S-operad

Theorem (D) If M is an Act>0-Ibimodule then M•

c := {Mn c } and M•

  • := {Mn
  • } are

semi-cosimplicial spaces. Furthermore there exists a semi-cosimplicial map h : Mc → Mo. Corollary 1 If η : Act → M is a map of Act>0-bimodules then:

there exists a product: Mn

c × Mm c → Mn+m c

and an action: Mn

c × Mm

  • → Mn+m
  • ∈ Act>0(2; c)
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SLIDE 56

Bimodules and Ibimodules Model Structures Main result and applications

Infinitesimal bimodules over an S-operad

Theorem (D) If M is an Act>0-Ibimodule then M•

c := {Mn c } and M•

  • := {Mn
  • } are

semi-cosimplicial spaces. Furthermore there exists a semi-cosimplicial map h : Mc → Mo. Corollary 1 If η : Act → M is a map of Act>0-bimodules then:

there exists a product: Mn

c × Mm c → Mn+m c

and an action: Mn

c × Mm

  • → Mn+m
  • ∈ Act>0(2; o)
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SLIDE 57

Bimodules and Ibimodules Model Structures Main result and applications

Infinitesimal bimodules over an S-operad

Theorem (D) If M is an Act>0-Ibimodule then M•

c := {Mn c } and M•

  • := {Mn
  • } are

semi-cosimplicial spaces. Furthermore there exists a semi-cosimplicial map h : Mc → Mo. Corollary 2 If η : Act → M is a map of {o; c}-operads then:

Mc is a multiplicative operad there exists an action: Mn

c × Mm

  • → Mn+m
  • and a product: Mn
  • × Mm
  • → Mn+m
slide-58
SLIDE 58

Bimodules and Ibimodules Model Structures Main result and applications

Infinitesimal bimodules over an S-operad

Theorem (D) If M is an Act>0-Ibimodule then M•

c := {Mn c } and M•

  • := {Mn
  • } are

semi-cosimplicial spaces. Furthermore there exists a semi-cosimplicial map h : Mc → Mo. Corollary 2 If η : Act → M is a map of {o; c}-operads then:

Mc is a multiplicative operad there exists an action: Mn

c × Mm

  • → Mn+m
  • and a product: Mn
  • × Mm
  • → Mn+m
slide-59
SLIDE 59

Bimodules and Ibimodules Model Structures Main result and applications

Model category

L : C1 ⇄ C2 : R A model category cofibrantly generated (I, J)

slide-60
SLIDE 60

Bimodules and Ibimodules Model Structures Main result and applications

Model category

L : C1 ⇄ C2 : R A model category cofibrantly generated (I, J) A model category cofibrantly generated (LI, LJ)

slide-61
SLIDE 61

Bimodules and Ibimodules Model Structures Main result and applications

Free S-operad

F : Coll(S) ⇄ OperadS : U Coll(S) :

  • objects are families of spaces {M(s1, . . . , sn; sn+1)}n∈N

si∈S

  • maps are families of continuous maps
slide-62
SLIDE 62

Bimodules and Ibimodules Model Structures Main result and applications

Free S-operad

F : Coll(S) ⇄ OperadS : U Coll(S) :

  • objects are families of spaces {M(s1, . . . , sn; sn+1)}n∈N

si∈S

  • maps are families of continuous maps

T op has a cofibrantly generated model category :

f : X → Y is a weak equivalence iff f ∗

n : πn(X) → πn(Y ) are

isomorphisms f : X → Y is a ”Serre” fibration iff for every CW -complex A there is a lift in every commutative diagram:

A × {0}

  • X
  • A × [0 ; 1]

Y

slide-63
SLIDE 63

Bimodules and Ibimodules Model Structures Main result and applications

Free S-operad

F : Coll(S) ⇄ OperadS : U Coll(S) :

  • objects are families of spaces {M(s1, . . . , sn; sn+1)}n∈N

si∈S

  • maps are families of continuous maps

T op has a cofibrantly generated model category :

f : X → Y is a weak equivalence iff f ∗

n : πn(X) → πn(Y ) are

isomorphisms f : X → Y is a ”Serre” fibration iff for every CW -complex A there is a lift in every commutative diagram:

A × {0}

  • X
  • A × [0 ; 1]

Y I = {∂∆n → ∆n | n ∈ N} J = {∧n

k → ∆n | n ∈ N, k ≤ n}

all the objects are fibrant

slide-64
SLIDE 64

Bimodules and Ibimodules Model Structures Main result and applications

Free S-operad

F : Coll(S) ⇄ OperadS : U Coll(S) :

  • objects are families of spaces {M(s1, . . . , sn; sn+1)}n∈N

si∈S

  • maps are families of continuous maps

T op has a cofibrantly generated model category :

f : X → Y is a weak equivalence iff f ∗

n : πn(X) → πn(Y ) are

isomorphisms f : X → Y is a ”Serre” fibration iff for every CW -complex A there is a lift in every commutative diagram:

A × {0}

  • X
  • A × [0 ; 1]

Y I = {∂∆n → ∆n | n ∈ N} J = {∧n

k → ∆n | n ∈ N, k ≤ n}

all the objects are fibrant

⇒ Coll(S) inherits a cofibrantly generated model category.

slide-65
SLIDE 65

Bimodules and Ibimodules Model Structures Main result and applications

Free S-operad

F : Coll(S) ⇄ OperadS : U Let {M(s1, . . . , sn; sn+1)}n∈N

si∈S be a family of spaces.

For instance a point in F(M)(s1, s2, s3, s4; s5) is given by: s1 s2 s3 s4 s6 s7 s1 s8 s5

slide-66
SLIDE 66

Bimodules and Ibimodules Model Structures Main result and applications

Free S-operad

F : Coll(S) ⇄ OperadS : U Let {M(s1, . . . , sn; sn+1)}n∈N

si∈S be a family of spaces.

For instance a point in F(M)(s1, s2, s3, s4; s5) is given by: s1 s2 s3 s4 s6 s7 s1 s8 s5 M( ; s7) ∗s1 M(s2, s3; s6) M(s6, s4, s7; s8) M(s1, s8; s5)

slide-67
SLIDE 67

Bimodules and Ibimodules Model Structures Main result and applications

Free S-operad

F : Coll(S) ⇄ OperadS : U Let {M(s1, . . . , sn; sn+1)}n∈N

si∈S be a family of spaces.

The operadic composition: F(M)(s1, s2, s3 : s4) F(M)(s6, s7 : s1) F(M)(s6, s7, s2, s3 : s4)

slide-68
SLIDE 68

Bimodules and Ibimodules Model Structures Main result and applications

Free bimodule over an S-operad O

BO : Coll(S) ⇄ BimodO : U

slide-69
SLIDE 69

Bimodules and Ibimodules Model Structures Main result and applications

Free bimodule over an S-operad O

BO : Coll(S) ⇄ BimodO : U Let {M(s1, . . . , sn; sn+1)}n∈N

si∈S be a family of spaces.

For instance a point in BO(M)(s1, s2, s3; s4) is given by:

slide-70
SLIDE 70

Bimodules and Ibimodules Model Structures Main result and applications

Free bimodule over an S-operad O

BO : Coll(S) ⇄ BimodO : U Let {M(s1, . . . , sn; sn+1)}n∈N

si∈S be a family of spaces.

For instance a point in BO(M)(s1, s2, s3; s4) is given by:

slide-71
SLIDE 71

Bimodules and Ibimodules Model Structures Main result and applications

Free bimodule over an S-operad O

BO : Coll(S) ⇄ BimodO : U Let {M(s1, . . . , sn; sn+1)}n∈N

si∈S be a family of spaces.

For instance a point in BO(M)(s1, s2, s3; s4) is given by:

slide-72
SLIDE 72

Bimodules and Ibimodules Model Structures Main result and applications

Free bimodule over an S-operad O

BO : Coll(S) ⇄ BimodO : U Let {M(s1, . . . , sn; sn+1)}n∈N

si∈S be a family of spaces.

For instance a point in BO(M)(s1, s2, s3; s4) is given by:

slide-73
SLIDE 73

Bimodules and Ibimodules Model Structures Main result and applications

Free bimodule over an S-operad O

BO : Coll(S) ⇄ BimodO : U Let {M(s1, . . . , sn; sn+1)}n∈N

si∈S be a family of spaces.

The right operations ◦i: BO(M)(s1, s2, s3; s4) O(s6, s7; s1) BO(M)(s6, s7, s2, s3; s4)

slide-74
SLIDE 74

Bimodules and Ibimodules Model Structures Main result and applications

Free bimodule over an S-operad O

BO : Coll(S) ⇄ BimodO : U Let {M(s1, . . . , sn; sn+1)}n∈N

si∈S be a family of spaces.

The right operations ◦i: BO(M)(s1, s2, s3; s4) O(s6, s7; s1) BO(M)(s1, s6, s7, s3; s4)

slide-75
SLIDE 75

Bimodules and Ibimodules Model Structures Main result and applications

Free bimodule over an S-operad O

BO : Coll(S) ⇄ BimodO : U Let {M(s1, . . . , sn; sn+1)}n∈N

si∈S be a family of spaces.

The left operations γl:

slide-76
SLIDE 76

Bimodules and Ibimodules Model Structures Main result and applications

Free bimodule over an S-operad O

BO : Coll(S) ⇄ BimodO : U Let {M(s1, . . . , sn; sn+1)}n∈N

si∈S be a family of spaces.

The left operations γl:

slide-77
SLIDE 77

Bimodules and Ibimodules Model Structures Main result and applications

Free infinitesimal bimodule over an S-operad O

IbO : Coll(S) ⇄ IbimodO : U

slide-78
SLIDE 78

Bimodules and Ibimodules Model Structures Main result and applications

Free infinitesimal bimodule over an S-operad O

IbO : Coll(S) ⇄ IbimodO : U Let {M(s1, . . . , sn; sn+1)}n∈N

si∈S be a family of spaces.

For instance a point in IbO(M)(s1, s2, s3, s4; s5) is given by:

slide-79
SLIDE 79

Bimodules and Ibimodules Model Structures Main result and applications

Free infinitesimal bimodule over an S-operad O

IbO : Coll(S) ⇄ IbimodO : U Let {M(s1, . . . , sn; sn+1)}n∈N

si∈S be a family of spaces.

For instance a point in IbO(M)(s1, s2, s3, s4; s5) is given by:

slide-80
SLIDE 80

Bimodules and Ibimodules Model Structures Main result and applications

Free infinitesimal bimodule over an S-operad O

IbO : Coll(S) ⇄ IbimodO : U Let {M(s1, . . . , sn; sn+1)}n∈N

si∈S be a family of spaces.

The left operations ◦i: O(s1, s2; s3) IbO(M)(s4, s5, s6; s2) IbO(M)(s1, s4, s5, s6; s3)

slide-81
SLIDE 81

Bimodules and Ibimodules Model Structures Main result and applications

Cofibrant replacements

As>0 − Ibimodules As>0 − Ibimodules maps ⇔ semi-cosimplicial spaces semi-cosimplicial maps

slide-82
SLIDE 82

Bimodules and Ibimodules Model Structures Main result and applications

Cofibrant replacements

As>0 − Ibimodules As>0 − Ibimodules maps ⇔ semi-cosimplicial spaces semi-cosimplicial maps Theorem (V.Turchin) A cofibrant replacement of As as an As>0-Ibimodule is given by the semi-cosimplicial space ∆.

slide-83
SLIDE 83

Bimodules and Ibimodules Model Structures Main result and applications

Cofibrant replacements

As>0 − Ibimodules As>0 − Ibimodules maps ⇔ semi-cosimplicial spaces semi-cosimplicial maps Theorem (V.Turchin) A cofibrant replacement of As as an As>0-Ibimodule is given by the semi-cosimplicial space ∆. Act>0 − Ibimodule M ⇒ a semi-cosimplicial map h : M•

c → M•

slide-84
SLIDE 84

Bimodules and Ibimodules Model Structures Main result and applications

Cofibrant replacements

As>0 − Ibimodules As>0 − Ibimodules maps ⇔ semi-cosimplicial spaces semi-cosimplicial maps Theorem (V.Turchin) A cofibrant replacement of As as an As>0-Ibimodule is given by the semi-cosimplicial space ∆. Act>0 − Ibimodule M ⇒ a semi-cosimplicial map h : M•

c → M•

  • Consequence

If M is an Act>0-Ibimodule then:

Ibimodh

As>0(As; Mc) ≃ IbimodAs>0(∆; Mc) = Nat(∆ ; Mc) = sTot(Mc)

Ibimodh

As>0(As; Mo) ≃ IbimodAs>0(∆; Mo) = Nat(∆ ; Mo) = sTot(Mo)

slide-85
SLIDE 85

Bimodules and Ibimodules Model Structures Main result and applications

Cofibrant replacements

Act>0 − Ibimodule M ⇒ a semi-cosimplicial map h : M•

c → M•

  • Theorem (D)

A cofibrant replacement

△ of Act as an Act>0-Ibimodule is given by the

pair of semi-cosimplicial spaces:

  • △(n; c) = ∆n

and

  • △(n + 1; o) = ∆n × [0 ; 1]

where the semi-cosimplicial map h : ∆n → ∆n × [0 ; 1] is defined by: (t1 ≤ · · · ≤ tn) → (t1 ≤ · · · ≤ tn) × {1}

slide-86
SLIDE 86

Bimodules and Ibimodules Model Structures Main result and applications

Cofibrant replacements

Act>0 − Ibimodule M ⇒ a semi-cosimplicial map h : M•

c → M•

  • Theorem (D)

A cofibrant replacement

△ of Act as an Act>0-Ibimodule is given by the

pair of semi-cosimplicial spaces:

  • △(n; c) = ∆n

and

  • △(n + 1; o) = ∆n × [0 ; 1]

where the semi-cosimplicial map h : ∆n → ∆n × [0 ; 1] is defined by: (t1 ≤ · · · ≤ tn) → (t1 ≤ · · · ≤ tn) × {1} Theorem (D) Let M be an Act>0-Ibimodule. One has: Ibimodh

Act>0(Act; M)

≃ IbimodAct>0(

△; M)

≃ IbimodAs>0(∆; Mc) ≃ sTot(Mc)

slide-87
SLIDE 87

Bimodules and Ibimodules Model Structures Main result and applications

Cofibrant replacements

M is an Act>0 − bimodule ⇒ Mc is an As>0 − bimodule Theorem (V.Turchin) If η : Act → M is a map of Act>0-bimodules and M(0; c) ≃ ∗ then:

sTot(Mc) ≃ ΩBimodh

As>0(As>0; Mc)

sTot(Mo) ≃ Ω???

slide-88
SLIDE 88

Bimodules and Ibimodules Model Structures Main result and applications

Cofibrant replacements

M is an Act>0 − bimodule ⇒ Mc is an As>0 − bimodule Theorem (V.Turchin) If η : Act → M is a map of Act>0-bimodules and M(0; c) ≃ ∗ then:

sTot(Mc) ≃ ΩBimodh

As>0(As>0; Mc)

sTot(Mo) ≃ Ω???

M is an {o; c} − operad pointed ⇒ Mc is a multiplicative operad Mo is an As>0 − bimodule

slide-89
SLIDE 89

Bimodules and Ibimodules Model Structures Main result and applications

Cofibrant replacements

M is an Act>0 − bimodule ⇒ Mc is an As>0 − bimodule Theorem (V.Turchin) If η : Act → M is a map of Act>0-bimodules and M(0; c) ≃ ∗ then:

sTot(Mc) ≃ ΩBimodh

As>0(As>0; Mc)

sTot(Mo) ≃ Ω???

M is an {o; c} − operad pointed ⇒ Mc is a multiplicative operad Mo is an As>0 − bimodule Theorem (V.Turchin) If η : Act → M is a map of {o; c}-operads and M0

c ≃ M1 c ≃ M0

  • ≃ ∗ then:

sTot(Mc) ≃ Ω2Operadh(As>0; Mc) sTot(Mo) ≃ ΩBimodh

As>0(As>0; Mo) ≃ Ω2 ???

slide-90
SLIDE 90

Bimodules and Ibimodules Model Structures Main result and applications

Main result

Theorem (D) If η : Act → M is an Act>0-bimodules map then sTot(Mo) is weakly equivalent to: Ω

  • Bimodh

As>0(As>0; Mc) ; Bimodh Act>0(Act>0; M)

slide-91
SLIDE 91

Bimodules and Ibimodules Model Structures Main result and applications

Main result

Theorem (D) If η : Act → M is an Act>0-bimodules map then sTot(Mo) is weakly equivalent to: Ω

  • Bimodh

As>0(As>0; Mc) ; Bimodh Act>0(Act>0; M)

  • Sketch of proof:

Determine a cofibrant replacement of Act>0 as an Act>0-bimodule

slide-92
SLIDE 92

Bimodules and Ibimodules Model Structures Main result and applications

Main result

Theorem (D) If η : Act → M is an Act>0-bimodules map then sTot(Mo) is weakly equivalent to: Ω

  • Bimodh

As>0(As>0; Mc) ; Bimodh Act>0(Act>0; M)

  • Sketch of proof:

Determine a cofibrant replacement of Act>0 as an Act>0-bimodule Determine a sub-operad M∗ such that: sTot(Mo) ≃ Bimodh

Act>0(Act>0; M∗)

slide-93
SLIDE 93

Bimodules and Ibimodules Model Structures Main result and applications

Main result

Theorem (D) If η : Act → M is an Act>0-bimodules map then sTot(Mo) is weakly equivalent to: Ω

  • Bimodh

As>0(As>0; Mc) ; Bimodh Act>0(Act>0; M)

  • Sketch of proof:

Determine a cofibrant replacement of Act>0 as an Act>0-bimodule Determine a sub-operad M∗ such that: sTot(Mo) ≃ Bimodh

Act>0(Act>0; M∗)

Prove that Bimodh

Act>0(Act>0; M∗) is equipped with an inclusion into

  • Bimodh

As>0(As>0; Mc) ; Bimodh Act>0(Act>0; M)

  • which is a weak equivalence.
slide-94
SLIDE 94

Bimodules and Ibimodules Model Structures Main result and applications

Main result

Theorem (D) If η : Act → M is an Act>0-bimodules map then sTot(Mo) is weakly equivalent to: Ω

  • Bimodh

As>0(As>0; Mc) ; Bimodh Act>0(Act>0; M)

  • sTot(Mc) ≃ ΩBimodh

As>0(As>0; Mc)

sTot(Mo) ≃ Ω

  • Bimodh

As>0(As>0; Mc) ; Bimodh Act>0(Act>0; M)

  • ⇒ which is an algebra over SC1.
slide-95
SLIDE 95

Bimodules and Ibimodules Model Structures Main result and applications

Main result

Theorem (D) If η : Act → M is an Act>0-bimodules map then sTot(Mo) is weakly equivalent to: Ω

  • Bimodh

As>0(As>0; Mc) ; Bimodh Act>0(Act>0; M)

  • Theorem (D)

If η : Act → M is a map of {o; c}-operads and M(1; c) ≃ M(1; o) ≃ ∗ then sTot(Mo) is weakly equivalent to: Ω2 Operadh(As>0; Mc) ; Operadh

{o;c}(Act>0; M)

slide-96
SLIDE 96

Bimodules and Ibimodules Model Structures Main result and applications

Main result

Theorem (D) If η : Act → M is an Act>0-bimodules map then sTot(Mo) is weakly equivalent to: Ω

  • Bimodh

As>0(As>0; Mc) ; Bimodh Act>0(Act>0; M)

  • Theorem (D)

If η : Act → M is a map of {o; c}-operads and M(1; c) ≃ M(1; o) ≃ ∗ then sTot(Mo) is weakly equivalent to: Ω2 Operadh(As>0; Mc) ; Operadh

{o;c}(Act>0; M)

  • Sketch of proof:

Bimodh

As>0(As>0; Mc) ≃ ΩOperadh(As>0; Mc)

Bimodh

Act>0(Act>0; M) ≃ ΩOperadh {o;c}(Act>0; M)

slide-97
SLIDE 97

Bimodules and Ibimodules Model Structures Main result and applications

Main result

Theorem (D) If η : Act → M is an Act>0-bimodules map then sTot(Mo) is weakly equivalent to: Ω

  • Bimodh

As>0(As>0; Mc) ; Bimodh Act>0(Act>0; M)

  • Theorem (D)

If η : Act → M is a map of {o; c}-operads and M(1; c) ≃ M(1; o) ≃ ∗ then sTot(Mo) is weakly equivalent to: Ω2 Operadh(As>0; Mc) ; Operadh

{o;c}(Act>0; M)

  • sTot(Mc) ≃ Ω2Operadh(As>0; Mc)

sTot(Mo) ≃ Ω2 Operadh(As>0; Mc) ; Operadh

{o;c}(Act>0; M)

  • ⇒ which is an algebra over SC2.
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SLIDE 98

Bimodules and Ibimodules Model Structures Main result and applications

Structure on the singular homology

Consequence If M is a pointed {o; c}-operad (∃ η : Act → M) then the pair

  • H∗(sTot(Mc)) ; H∗(sTot(Mo))
  • is an sc2-algebra.
slide-99
SLIDE 99

Bimodules and Ibimodules Model Structures Main result and applications

Structure on the singular homology

Consequence If M is a pointed {o; c}-operad (∃ η : Act → M) then the pair

  • H∗(sTot(Mc)) ; H∗(sTot(Mo))
  • is an sc2-algebra.

◮ a bracket of degre 1: [− ; −] : Hp(sTot(Mc)) ⊗ Hq(sTot(Mc)) → Hp+q+1(sTot(Mc)) ◮ a commutative product of degre 0: − ∗ − : Hp(sTot(Mc)) ⊗ Hq(sTot(Mc)) → Hp+q(sTot(Mc))

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SLIDE 100

Bimodules and Ibimodules Model Structures Main result and applications

Structure on the singular homology

Consequence If M is a pointed {o; c}-operad (∃ η : Act → M) then the pair

  • H∗(sTot(Mc)) ; H∗(sTot(Mo))
  • is an sc2-algebra.

◮ a bracket of degre 1: [− ; −] : Hp(sTot(Mc)) ⊗ Hq(sTot(Mc)) → Hp+q+1(sTot(Mc)) ◮ a commutative product of degre 0: − ∗ − : Hp(sTot(Mc)) ⊗ Hq(sTot(Mc)) → Hp+q(sTot(Mc)) ◮ an associative product of degre 0: − ∗i − : Hp(sTot(Mo)) ⊗ Hq(sTot(Mo)) → Hp+q(sTot(Mo)) ◮ a module structure of degre 0 over the commutative product: − ∗e − : Hp(sTot(Mc)) ⊗ Hq(sTot(Mo)) → Hp+q(sTot(Mo))

slide-101
SLIDE 101

Bimodules and Ibimodules Model Structures Main result and applications

Structure on the singular homology

The commutative product − ∗ −:

slide-102
SLIDE 102

Bimodules and Ibimodules Model Structures Main result and applications

Structure on the singular homology

The commutative product − ∗ −: λ1 : sTot(Mc) × sTot(Mc) → sTot(Mc) (f1 ; f2) → h1

slide-103
SLIDE 103

Bimodules and Ibimodules Model Structures Main result and applications

Structure on the singular homology

The commutative product − ∗ −: λ1 : sTot(Mc) × sTot(Mc) → sTot(Mc) (f1 ; f2) → h1 hn

1 : (t1 ≤ · · · ≤ tn) −

→ ∗2 ; c

  • f ℓ

1 (2t1, . . . , 2tℓ) ; f n−ℓ 2

(2tℓ+1 − 1, . . . , 2tn − 1)

  • if tℓ ≤ 1/2 < tℓ+1
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SLIDE 104

Bimodules and Ibimodules Model Structures Main result and applications

Structure on the singular homology

The commutative product − ∗ −: λ1 : sTot(Mc) × sTot(Mc) → sTot(Mc) (f1 ; f2) → h1 hn

1 : (t1 ≤ · · · ≤ tn) −

→ ∗2 ; c

  • f ℓ

1 (2t1, . . . , 2tℓ) ; f n−ℓ 2

(2tℓ+1 − 1, . . . , 2tn − 1)

  • if tℓ ≤ 1/2 < tℓ+1
slide-105
SLIDE 105

Bimodules and Ibimodules Model Structures Main result and applications

Structure on the singular homology

The module structure − ∗e −: λ2 : sTot(Mc) × sTot(Mo) → sTot(Mo) (f1 ; f2) → h2 hn

2 : (t1 ≤ · · · ≤ tn) −

→ ∗2 ; o

  • f ℓ

1 (2t1, . . . , 2tℓ) ; f n−ℓ 2

(2tℓ+1−1, . . . , 2tn−1)

  • if tℓ ≤ 1/2 < tℓ+1
slide-106
SLIDE 106

Bimodules and Ibimodules Model Structures Main result and applications

Structure on the singular homology

The assaciative product − ∗i −: λ3 : sTot(Mo) × sTot(Mo) → sTot(Mo) (f1 ; f2) → h3 hn

3 : (t1 ≤ · · · ≤ tn) −

→ f ℓ

1 (2t1, . . . , 2tℓ) ◦ℓ+1 f n−ℓ 2

(2tℓ+1 − 1, . . . , 2tn − 1) if tℓ ≤ 1/2 < tℓ+1

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Bimodules and Ibimodules Model Structures Main result and applications

Structure on the Hochschild homology

Let X • be a semi-cosimplicial space.

∂ : C s

p(X q) → C s p−1(X q)

δ : C s

p(X q) → C s p(X q+1)

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Bimodules and Ibimodules Model Structures Main result and applications

Structure on the Hochschild homology

Let X • be a semi-cosimplicial space.

∂ : C s

p(X q) → C s p−1(X q)

δ : C s

p(X q) → C s p(X q+1)

Definition The Hochschild homology of X •, HH∗(X), is the homology of the chain complex (C∗(X), d) where: Cp(X) =

ℓ≥0

C s

p+ℓ(X ℓ)

and d = ∂ + (−1)p+1δ

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Bimodules and Ibimodules Model Structures Main result and applications

Structure on the Hochschild homology

Let X • be a semi-cosimplicial space.

∂ : C s

p(X q) → C s p−1(X q)

δ : C s

p(X q) → C s p(X q+1)

Definition The Hochschild homology of X •, HH∗(X), is the homology of the chain complex (C∗(X), d) where: Cp(X) =

ℓ≥0

C s

p+ℓ(X ℓ)

and d = ∂ + (−1)p+1δ From Bousfield, there exists an isomorphism: ϕ∗ : H∗(sTot(X)) → HH∗(X)

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Bimodules and Ibimodules Model Structures Main result and applications

Structure on the Hochschild homology

Let X • be a semi-cosimplicial space.

∂ : C s

p(X q) → C s p−1(X q)

δ : C s

p(X q) → C s p(X q+1)

Definition The Hochschild homology of X •, HH∗(X), is the homology of the chain complex (C∗(X), d) where: Cp(X) =

ℓ≥0

C s

p+ℓ(X ℓ)

and d = ∂ + (−1)p+1δ From Bousfield, there exists an isomorphism: ϕ∗ : H∗(sTot(X)) → HH∗(X) Consequence If M is a pointed {o; c}-operad then the pair (HH∗(Mc) ; HH∗(Mo)) is also an sc2-algebra.

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Bimodules and Ibimodules Model Structures Main result and applications

Structure on the Hochschild homology

Let M be pointed {o; c}-operad in the category of graded vector spaces. [−; −] : ± + ± − ∗ − :

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Bimodules and Ibimodules Model Structures Main result and applications

Structure on the Hochschild homology

− ∗e − : − ∗i − :

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Bimodules and Ibimodules Model Structures Main result and applications

Bousfield Spectral sequences

Theorem (D) The isomorphism introduced by Bousfield sends the structure introduced

  • n the singular homologies into the structure introduced on the

Hochschild homologies.

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Bimodules and Ibimodules Model Structures Main result and applications

Bousfield Spectral sequences

Theorem (D) The isomorphism introduced by Bousfield sends the structure introduced

  • n the singular homologies into the structure introduced on the

Hochschild homologies. Theorem (Salvatore) Let O be a multiplicative operad. Then the Bousfield spectral sequence for H∗(sTot(O)) given by: E 1

−p;q = Hq(Op)

and

p+1

  • i=0

(−1)idi : Hq(Op) → Hq(Op+1) is a spectrale sequence of Gerstenhaber algebras. Theorem (D) The Bousfield spectral sequences for (H∗(sTot(Mc)) ; H∗(sTot(Mo))) are spectral sequences of sc2-algebras.

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Bimodules and Ibimodules Model Structures Main result and applications

The space of long knots

Emb(R ; Rm) := hofib(Emb(R ; Rm) → Imm(R ; Rm))

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Bimodules and Ibimodules Model Structures Main result and applications

The space of long knots

Emb(R ; Rm) := hofib(Emb(R ; Rm) → Imm(R ; Rm)) Theorem (Dev. Sinha) If m > 3 then Emb(R ; Rm) ≃ sTot(Km) ≃ Ω2Operadh(As>0 ; Km).

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Bimodules and Ibimodules Model Structures Main result and applications

The space of long knots

Emb(R ; Rm) := hofib(Emb(R ; Rm) → Imm(R ; Rm)) Theorem (Dev. Sinha) If m > 3 then Emb(R ; Rm) ≃ sTot(Km) ≃ Ω2Operadh(As>0 ; Km).

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Bimodules and Ibimodules Model Structures Main result and applications

The space of long knots

Emb(R ; Rm) := hofib(Emb(R ; Rm) → Imm(R ; Rm)) Theorem (Dev. Sinha) If m > 3 then Emb(R ; Rm) ≃ sTot(Km) ≃ Ω2Operadh(As>0 ; Km).

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Bimodules and Ibimodules Model Structures Main result and applications

The space of links

Ln;m := hofib(Emb(

n

R ; Rm) → Imm(

n

R ; Rm))

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Bimodules and Ibimodules Model Structures Main result and applications

The space of links

Ln;m := hofib(Emb(

n

R ; Rm) → Imm(

n

R ; Rm)) Theorem (Munson-Volic and Dwyer-Hess) If m > 3 then Ln;m ≃ sTot(Φn(Km)) ≃ ΩBimodh

As>0(As>0 ; Φn(Km)).

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Bimodules and Ibimodules Model Structures Main result and applications

The space of links

Ln;m := hofib(Emb(

n

R ; Rm) → Imm(

n

R ; Rm)) Theorem (Munson-Volic and Dwyer-Hess) If m > 3 then Ln;m ≃ sTot(Φn(Km)) ≃ ΩBimodh

As>0(As>0 ; Φn(Km)).

Theorem (D) If m > 3 then the pair (Emb(R ; Rm) ; Ln;m) is an SC2-space.

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Bimodules and Ibimodules Model Structures Main result and applications

The space of links

Ln;m := hofib(Emb(

n

R ; Rm) → Imm(

n

R ; Rm)) Theorem (Munson-Volic and Dwyer-Hess) If m > 3 then Ln;m ≃ sTot(Φn(Km)) ≃ ΩBimodh

As>0(As>0 ; Φn(Km)).

Theorem (D) If m > 3 then the pair (Emb(R ; Rm) ; Ln;m) is an SC2-space.

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Bimodules and Ibimodules Model Structures Main result and applications

Future work: The space of k-immersions

Immk(R ; Rm) := hofib(Immk(

n

R ; Rm) → Imm(

n

R ; Rm))

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Bimodules and Ibimodules Model Structures Main result and applications

Future work: The space of k-immersions

Immk(R ; Rm) := hofib(Immk(

n

R ; Rm) → Imm(

n

R ; Rm)) Conjecture (Dobrinskaya , Turchin) 1) If m >?? then Immk(R ; Rm) has the homotopy type of a loop space.

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Bimodules and Ibimodules Model Structures Main result and applications

Future work: The space of k-immersions

Immk(R ; Rm) := hofib(Immk(

n

R ; Rm) → Imm(

n

R ; Rm)) Conjecture (Dobrinskaya , Turchin and D) 1) If m >?? then Immk(R ; Rm) has the homotopy type of a loop space. 2) If m >?? then the pair (Emb(R ; Rm) ; Immk(R ; Rm)) is an SC2-space.

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Bimodules and Ibimodules Model Structures Main result and applications

Future work: The space of k-immersions

Immk(R ; Rm) := hofib(Immk(

n

R ; Rm) → Imm(

n

R ; Rm)) Conjecture (Dobrinskaya , Turchin and D) 1) If m >?? then Immk(R ; Rm) has the homotopy type of a loop space. 2) If m >?? then the pair (Emb(R ; Rm) ; Immk(R ; Rm)) is an SC2-space. Problems 1) To find a cosimplicial replacement with a Km-bimodule structure. 2) The converge of the Taylor tower associated to the functor Immk(−; Rm).

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Bimodules and Ibimodules Model Structures Main result and applications

Thank you for your attention!