, .
2.4.
f(x1 2, 3)
, . , , , . , . . :
, , , .
, , . , , .
- , , . : , , , , ..
G ( ) (X, ), = {1 2,...} - , = {1, 2,...} - X, (i ,) . X , , , {).
X , - ; .
, G 1 2,..., n ( X) 1, 2,..., ( ), . , G ( ) (.A).
, , , . G = (X, ) , , G, G = (X, ).
, (. . ), . , , 4.1() (1, 2) a1, (2, 1) - 2.
, G X , , . X X, G = {X, ).
|
|
() (1) = {2, x5}, . . x2 x5 , x1
(2)={1,3},
(3) ={ 1 },
(4) = Ø - ,
(5)={4}.
) ;