L :S {0,1}=I, , S ( )=() ().
L.
1 ( L). f: I, L, f: S I L, f, ,
f(p) = f(p), p P.
. S0 = P, Sn+1 = Sn { A: A Sn} {(A B):A,B Sn}. . ef(A)=f(A) A S0. , ef Sn, Sn+1 : = , Sn, ef(A) = ; , A=(B C) , Sn, ef(B C) = ef(B) ef(C). , f.
L , ()=1, :S I L.
( ). L , L.
. L, , MP Q , , . , . .
2. 1, 2, , n, f: { 1,2,,n } I={0,1}. L , :
ef L , ={ 1,2,,n}, ef f .
, . , = , : L L .
= . ef(B) = 1, ef(A) = 0 = = . L . L , : L = . ef(B) = 0, ef(A) = 1 = = . : L =.
= ( ). :
L L ђ.
ef(B) = 0, ef(C) : ef(A)=1 = , = . L . L ( ), : L .
ef(B) = 1, 2 : ef(C) = 1 ef(C) = 0. ef(C) = 1 : ef(A) = 1 ђ = , = = ( ). : L
L ( ) ( 1), , L . ef() = 1 ef() = 0 : = A= (B C), B = B, C = C. :
L , L .
L ( ( )), :
L ( ) =. .
. . : L , ef(A) = 1 . , : L , L . : L n L an . L (n ) (( n ) ) MP, : L . n 1 , : L , .
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L ,
L ( ),
L ( ( ))
( ). L , L, .
. , . , , , .