21.02.2012
, , .
, . .
, .
, 2 , .
, - , .
, . + (U ) , , , , .
- , + , .
- , + .
, * (∩) , .
- , , , ** , , .
.
(-) , , , .
Ω , , . :
: , , , , 3. U ∩?
U , , 3.
U = + {(2;3);(3;2);(3;4);(3;6);(4;3);(6;3)}
∩ , 3.
∩ = {(1;3);(3;1);(3;3);(3;5);(5;3)}
21.02.2012
1, 2, , n , Ω, , .
. . . . , , , , , . . , , . (). , . , . n , m , ()= m /n. :
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1) 1. , , , m=n, , P(A) = m/n = n/n = 1
2) 0. , , , , m=0, P(A) = 0 / n = 0
3) : 0 ≤ () ≤ 1. = 0, = n, n , :
0 ≤ m ≤ n
0 ≤ m/n ≤ 1
0 ≤ P(A) ≤ 1
: wi (i ≥ 0) , , :
, , . , : 0 ≤ P(A) ≤ 1 (Ω)=f, Ω - n (Ø)=0.