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, .

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}.

) ;





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