. 16.8 . . 16.8, , , . 16.8, , , . 16.8, , . 16.8,d .
. 16.8.
16.3. G n ³ 3 . p, 1 £ p < (n-1)/2, , p, p, n (n ─ 1)/2 , G ─ ().
16.4. G ─ , U(G) = Gs ─ G . G ─ , Gs ─ .
. , , G (. 16.9) , , Gs , .
. 16.9.
, G ─ , Gs ─ Gs = G(U) = U(G) (. 16.10).
. 16.10.
G , G S(G) (. 16.11).
. 16.11.
16.5. U(S(G)) , , G ─ , , U(G) .
T(G) , (X È U) , , G. , . . 16.12, G, . 16.12, . , T(G) G U(G).
ࠠ b
. 16.12.
16.6. G ─ n , , Up(G) ─ , p ³ n ─ 3. Un(G) ─ G.
, 16.6, . 16.13. G , . . . n G 6. p = 3 , G Up(G) = U3(G). U(G) U2(G) .
. , . , . , , . , , u 13 G (. 16.13) u 23 u 34. , x 1,3 U(G) x 2,3 x 3,4. (a, b, , e) U(G) U2(G), (u 1, u 2, u 6) U2(G) U3(G), . , 16.6.
|
|
. 16.13.
, .
16.1. G = (X, U) , xi Î X r (xi) ³ 2.
16.2. xi Î X r (xi) = 2, 2 , xi, , , G.
16.3. xi Î X r (xi) > 2 xi, , xi, . 16.14 G , .
. , . , .
16.7 (). L ─ , xi, xj ─ , , , xi xj, L L ( xi, xj), L , xi, xj.
. 16.14. ,
G = (X, U) , , , ─ . , . , 2.7 , , . , : xi ( ) xj ( ), . . 16.15.
, . G = (X, U) , , , (), ui Î U, Ï U, . . 16.16.
. 16.15.
. 16.16.
= {(x 1, x 2), (x 2, x 3), (x 3, x 4), (x 4, x 5), (x 5, x 6), (x 6, x 7), (x 7, x 8), (x 8, x 1)}, u 1 = (x 1, x 2), u 3 = (x 3, x 4), u 5 = (x 5, x 6), u 7 = (x 7, x 8) ─ , , , , . , .
|
|
1. :
) ,
) ,
) ,
) .
. 16.17 , . .
ࠠ
⠠
. 16.17.
2. G = (X, U), . 16.17,, , .
: 16.17, , G ─ , .
1.1. G. . . 1.2.
1.2. x 1.
1.3. u (x 1 x 4). : u (x 1 x 4) = u 14. L R.
1.4. |L| ¹ m, m ─ G, . 1.5.
1.5. x 4.
2.3. u 45. L .
2.4. |L| ¹ m, . 2.5.
2.5. x 5.
3.3. u 56 L.
3.4. |L| ¹ m, . 3.5.
3.5. x 6.
4.3. u 67 ( u 61 , ).
4.4. |L| ¹ m, . 4.5.
4.5. x 7.
5.3. u 73. L.
5.4. |L| ¹ m, . 5.5.
5.5. x 3.
6.3. u 34, L.
6.4. |L| ¹ m, . 6.5.
6.5. x 4.
7.3. u 46, L.
7.4. |L| ¹ m, . 7.5.
7.5. x 6.
8.3. , u 61.
8.4. |L| ¹ m, . 8.5.
8.5. x 1.
9.3. u 12, L.
9.4. |L| ¹ m, . 9.5.
9.5. x 2.
10.3. u 25, L.
10.4. |L| ¹ m, . 10.5.
10.5. x 5.
11.3. u 58, L.
11.4. |L| ¹ m, . 11.5.
11.5. x 8.
12.3. u 81, L.
12.4. |L| = m, . 12.6.
12.6. (u 14 u 45 u 56 u 67 u 73 u 34 - u 46 u 61 u 12 u 25 u 58 u 81).
. .
3. .
: . 16.18 G, . , , . : = (x 1 ─ x 2 ─ x 15 ─ x 13 ─ x 18 ─ x 16 ─ x 14 ─ x 6 ─ x 7 ─ x 17 ─ x 20 ─ x 19 ─ x 11 ─ x 12 ─ x 3 ─ x 4 ─ x 10 ─ x 9 ─ x 8 ─ x 5 ─ x 1).
. 16.18.
1. ? ?
2. ?
3. ?
4. , ?
5. ?
6. ?
7. ?
8. ?
9. ?
10. ?
|
|