Элементы дискретной математики. Часть I - 115 стр.

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S.
{1, 2,...,13} :
b
1
{1, 2, 4, 10},b
6
{2, 6, 7, 9},b
10
{6, 10, 11, 13},
b
2
{2, 3, 5, 11},b
7
{3, 7, 8, 10},b
11
{1, 7, 11, 12},
b
3
{3, 4, 6, 12},b
8
{4, 8, 9, 11},b
12
{2, 8, 12, 13},
b
4
{4, 5, 7, 13},b
9
{5, 9, 10, 12},b
13
{1, 3, 9, 13}.
b
5
{1, 5, 6, 8},
M =(m
ij
)
m
ij
=
1,
i b
j
;
0,
i b
j
.
M =
1101000001000
0110100000100
0011010000010
0001101000001
1000110100000
0100011010000
0010001101000
0001000110100
0000100011010
0000010001101
1000001000110
0100000100011
1010000010001
,
M.
n! n