The spanning laceability of k-ary The spanning laceability of k ary - - PowerPoint PPT Presentation

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The spanning laceability of k-ary The spanning laceability of k ary - - PowerPoint PPT Presentation

The spanning laceability of k-ary The spanning laceability of k ary n-cubes when k is even : : 1 Outline Introd ction Introduction Preliminaries Definition Theorem 1


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SLIDE 1

The spanning laceability of k-ary The spanning laceability of k ary n-cubes when k is even

學生:張書莉 指導教授 高欣欣老師 指導教授:高欣欣老師

1

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SLIDE 2

Outline

Introd ction Introduction Preliminaries

Definition Theorem 1 Theorem 2

M i lt Main results

Lemma 1-5 Theorem 3

2

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SLIDE 3

Introduction

Paper p1

(0,0) (1,0) (2,0) (3,0) (4,0) (5,0) 1 2 (0,1) (0,2) (1,1) (1,2) (2,1) (2,2) (3,1) (3,2) (4,1) (4,2) (5,1) (5,2) 1 (0,0) (0,1) (1,0) (1 1) (0,0,0) (1,0,0) (0,1,0) (1,1,0) 3 4 (0,3) (0,4) (1,3) (1,4) (2,3) (2,4) (3,3) (3,4) (4,3) (4,4) (5,3) (5,4)

2 1

Q

2 2

Q

1 (0,1) (1,1) (0,0,1) (1,0,1) (0,1,1) (1,1,1)

2 3

Q

6 1

Q

5 (0,5) (1,5) (2,5) (3,5) (4,5) (5,5)

6 2

Q

3

k-ary n-cube hypercube

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SLIDE 4

Introduction

) (

6 k

Q Q ) (

3 n

Q Q

6-neighbers (2n-neighbers)

1 1 k

u

1

u

1 − k

u 4-neighbers (2n-2)

) (

, 1 , 6 2 k n

Q Q ) (

1 , 1 5 , 6 2 − k k n

Q Q ) (

1 , 1 1 , 6 2 k n

Q Q

4

) (

1 2 n

Q Q

) (

1 2 − n

Q Q ) (

1 2 n

Q Q

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SLIDE 5

Introduction

Paper p1 Recent researches

1. 1. ,

w b w b

edge-bipancyclic

4 2

Q

edge-bipanconnected

4 2

Q

2. 3.

v P1 u v u v P1 P2 P1 P2

2-connected

5 2

Q

2*-connected

5 2

Q

5

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SLIDE 6

Introduction

Paper p2 w b

6

k n

Q

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SLIDE 7

Preliminaries

Paper p3 1. u v 1*-connected 1*-laceable 2. u v 2*-connected v 2*-laceable

7

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SLIDE 8

Preliminaries

Paper p3 3. W B W B 4.

8

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SLIDE 9

Preliminaries

Paper p3 5.

u

C(u,v) is k-container, k*-container; G is k-connected, k*-connected

u

u1 u2 u3

C(u,v) is 3*-cantainer v 9

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SLIDE 10

Preliminaries

Paper p4 6.

(0,0) (0,1) (1,0) (1,1) (2,0) (2,1) (3,0) (3,1) (4,0) (4,1) (5,0) (5,1) (0,3) (0,2) (1,3) (1,2) (2,3) (2,2) (3,3) (3,2) (4,3) (4,2) (5,3) (5,2)

6 2

Q

1th-bit

( , ) (0,4) ( , ) (1,4) ( , ) (2,4) ( , ) (3,4) ( , ) (4,4) ( , ) (5,4)

1th bit

(0,5) (1,5) (2,5) (3,5) (4,5) (5,5)

0th-bit 0th-bit 1th-bit

10

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SLIDE 11

Preliminaries

Paper p4

Preliminaries

11

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SLIDE 12

Main results Main results

Lemma 1

tools

Lemma 2 Lemma 3

tools

k

Lemma 3 Lemma 4

Base cases for mathematical induction

k n

Q

k

Q2

Lemma 5 Theorem3

proof proof k mathematical induction

k n

Q Theorem3

p

k n 4 6 8

n

Q

n 2 1

2 3

Lemma 3 Lemma 4 Lemma 5

12

2 n-1 n

n-1 n

Theorem 3

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SLIDE 13

Main results

Paper p5

w b

j k n

Q ,

1 − ' , 1 j k n

Q −

1 , 1 + − j k n

Q

1 ' , 1 − − j k n

Q Proof:

13

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SLIDE 14

Lemma 1

Paper p5

Lemma 1

w

Proof:

b

j k

Q

j k n

Q ,

1 −

w

1

x

, 1 k n

Q −

1 , 1 k n

Q −

b

x

14

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SLIDE 15

Lemma 1

Paper p5

Lemma 1

Proof:

w

' j

y

1 '− j

y

1 + j

y y y y

1 '

b

j k

Q ,

1 ' , 1 j k n

Q

1 , 1 + j k n

Q

1 ' , 1 − j k

Q

j

x

1 '− j

x

1 + j

x

15

n

Q

1 − 1 n

Q −

1 − n

Q

1 − n

Q

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SLIDE 16

Main results

Paper p6

Main results

w b

i k n

Q ,

1 − j k n

Q ,

1 − 1 , 1 + − i k n

Q

1 , 1 − − j k n

Q Proof:

The same as Lemma 1-case1 16 Similar to case2.1

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SLIDE 17

Lemma 2

Paper p6 Proof:

w

i

x

i

y

1 + i

x

1 + i

y

1 + i

z

1 + i

w

1 − j

x

1 − j

y

1 − j

z

1 − j

w

j

x

j

y

b 17 b

i k n

Q ,

1 − j k n

Q ,

1 − 1 , 1 + − i k n

Q

1 , 1 − − j k n

Q

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SLIDE 18

Lemma 3 4

Paper p7

Lemma 3, 4

w & b respective direction

b2 w b1 b1 b3 b2 b4

4 2

Q

6 2

Q

b4

18

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SLIDE 19

Paper p7

w w

3* laceable

b1 w b2

Proof: 3*-laceable

w b1 w b2

4*-laceable

19

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SLIDE 20

Paper p8-10 Proof:

w b1 w b3 w w b2 b4

3*-laceable

w b1 w b3 w w b2 b4

20

4*-laceable

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SLIDE 21

Lemma 5

Paper p11-17 reuglar

6 2

Q2 Q

21

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SLIDE 22

Lemma 5

Paper p11-17

Lemma 5

22

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SLIDE 23

Lemma 5

Paper p11-17 case1 case2 case3 case4

1 − = k v

Case 1

2

1

− ≤

k vt

Case 2 ((k 2 k 1) (k 1 k 1))

)) ( ( b w C E ∈

and 2 some for 1

1

= ≥ − =

  • t

v t k v

Case 4

2

1

− ≤

k vt

Case 3 ((k 2 k 1) (k 1 k 1))

)) ( ( b w C E ∉

1 s 1.1 case =

((k-2,k-1),(k-1,k-1))

)) , ( ( b w C E ∈

((k-2,k-1),(k-1,k-1))

)) , ( ( b w C E ∉

1 t 2.1 case = 2 t 4.1 case = 1 t 3.1 case = 2 s 1.2 case ≥ 2 t 2 2 3 s 2.1.3 case 2 s 2.1.2 case 1 s 2.1.1 case ≥ ≥ = = 1 4 2 1 3 t 4.2 case 2 s 4.1.2 case 1 s 4.1.1 case ≥ ≥ = 2 t 3.2 case 2 s 3.1.2 case 1 s 3.1.1 case ≥ ≥ = 3 s 2 2 3 case 2 s 2.2.2 case 1 s 2.2.1 case 2 t 2.2 case ≥ = = ≥ 2 s 4.2.2 case 1 s 4.2.1 case ≥ = 2 s 3.2.2 case 1 s 3.2.1 case ≥ = 23 3 s 2.2.3 case ≥

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SLIDE 24

Paper p11-17

Lemma 5

Proof: step1 step3

w b

regular

w b

step2 f p

6 2

Q

8 2

Q

2

Q

2

24

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SLIDE 25

Theorem 3

Paper p17 Proof:

25

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SLIDE 26

Paper p17

1 + m

P

w

1

w

1 − k

w

m

P

1

} {

− = m i i

P

b

k 1 k k 1 k 2 k 2 k k

1

b

1 − k

b

, 1 k n

Q −

1 , 1 − − k k n

Q

1 , 1 k n

Q −

2 , 1 k n

Q −

2 , 1 − − k k n

Q

26

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SLIDE 27

Paper p17-20

1

P P

m =

w b

2 1

P P

m

=

+ 1 − k

w

2

b

z

1

z P

, 1 k n

Q −

1 , 1 − − k k n

Q

1 , 1 k n

Q −

2 , 1 k n

Q −

27

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SLIDE 28

Paper p17-20

w b

1 + m

P

1 − k

w

2

b

m

P

1

} {

− = m i i

S

1 1}

{

− = m i i

S

y

1 1

z

1

z

P

y

1 − m

y

1

y

1 1 − m

y

, k

Q

1 , − k k

Q

1 , k

Q

2 , k

Q

1 n

Q −

1 − n

Q

1 n

Q −

1 n

Q −

28

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SLIDE 29

Paper p17-20

2

P

w b

1

P

1 − k

w

2

b

1

w

z

1

z

P

, 1 k n

Q −

1 , 1 − − k k n

Q

1 , 1 k n

Q −

2 , 1 k n

Q −

2 , 1 − − k k n

Q

29

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SLIDE 30

Paper p17-20

2

P w b x e

3

P

2

b

1 − k

w

2 − k

g

2 '}

{

− m

S

b

2 '}

{

− m

T

1

w x

1

P f

1 − k

e P g y y y

1

y

1

1

} {

= i i

S

1

} {

= i i

T z

1

z

y

1

y

1 − m

y

1 − m

y

1

y

1 − k

f

, k

Q

1 , − k k

Q

1 , k

Q

2 , k

Q

2 , − k k

Q

1 n

Q −

1 − n

Q

1 n

Q −

1 n

Q −

1 − n

Q

30

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SLIDE 31

Paper p17-20

w b

2

P

2

b

1

P

1 − k

w

2 − k

g

x

1

x

e P

3

P b

f

1

w x

1 1 '}

{

− = m i i

S

1 1 '}

{

− = m i i

T

g P

1 − k

e

1

z

z

y y

1 − k

f

z

z

f

, 1 k n

Q −

1 , 1 − − k k n

Q

1 , 1 k n

Q −

2 , 1 k n

Q −

2 , 1 − − k k n

Q

31

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SLIDE 32

Paper p21

1 + m

P

w

1 1 − m

x

1

w

1

x

1 '+ j

w x

' j

w

1 − k

w

m

P

' j

x

1 0}

{

m 1 1}

{

− m

U

1 ' j 1 0}

{

− = m p p

U

1 1}

{

= m p p

U

1 '}

{

− = m p j p

U

, k

Q

1 , − k k

Q

1 , k

Q

' , j k

Q

2 , − k k

Q

1 ' , + j k

Q

b

1 − k

b b

1

b

1 '+ j

b

1 1 − m

y

1

y

' 1 j m

y

− 1 − m

y

y

' j

y

1 n

Q −

1 − n

Q

1 n

Q −

1 n

Q −

1 − n

Q

1 − n

Q

32

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SLIDE 33

Paper p22-24

2

P

1 − j

b

1

w

1 '+ j

b P

w b

3 − k

b

1 − k

w

2 − k

b

2 − k

f

1 '+ j

f

3 − k

f

1 k

b e

3 k

f

' j

f

1 − k

b

1 − k

z

1

P

3 − k

e

2 − k

e

z

1 '+ j

e

33

, 1 k n

Q −

1 , 1 − − k k n

Q

1 , 1 k n

Q −

' , 1 j k n

Q −

2 , 1 − − k k n

Q

1 ' , 1 + − j k n

Q

1 ' , 1 − − j k n

Q

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SLIDE 34

Paper p22-24

P

w b

1

w

) 1 ( x

2

x

2

w P

1 '+ j

b

1

P

3

P

1 − k

w

) 1 (

1

x

2

P

) ( ) 1 ( x ) 2 ( x ) 2 (

1

x ) 3 ( x ) 3 (

1

x ) 4 ( x ) 4 (

1

x

1 1

} {

− = m p p

S

1 1 1}

{

− = m p p

S

2

} {

− = m p p

Y

1 2}

{

− = m p p

U

) 1 ( − α x ) 1 (

1

− α x

k

Q

1 − k k

Q

1 k

Q

3 ' , = j k

Q

4 , k

Q

2 k

Q

z

1

z

2

z

' j

z z =

' 2 j m

t

) (

0 α

x ) (

1 0 α

x ) 1 (

0 α

x ) 1 (

0 α

x

2

t

' j

t

2

b

34

, 1 k n

Q −

1 , 1 − k k n

Q

1 , 1 k n

Q −

3 , 1 − j k n

Q

1 n

Q −

2 , 1 k n

Q −

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SLIDE 35

conclusion

Lemma 3

Base cases for

k n

Q

mathematical induction

k

Q2

Lemma 4 Lemma 5

proof

n

k

Q2

Lemma 5 Theorem3

p proof

k n

Q

n 2 n-1 n Given any pair of vertices, w and b, from different partite sets of

k n

Q , there exist 2n

i n i

P U

1 2 − =

Internally disjoint paths between w and b, such that covers all vertices of

4 ≥ k

k n

Q

for any even integer and any integer

2 ≥ n

.

35

4 ≥ k

for any even integer and any integer

2 ≥ n

.