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S , ( ), , .

x (t) x (t 1), x (t 2),..., x (tn), t 1, t 2, , tn. n - f (x 1, x 2, , xn, t 1, t 2,..., tn).

, , , t 0 t 0 , .

t 1 < t 2 < < tk:

f (x (tk + 1)½ x (t 1), x (t 2),..., x (tk)) = f (x (tk + 1)½ x (tk)).

n x (t) . . .

.

, S 1, S 2, , , . , , , .

.

() , - (, , , ..). .

( ) { tn } = {0 £ t 1 £ t 2 £ tn £}, tn n - . n - (n 1)- {t n }.

{ tn, fn }, tn ; fn . , , , ..

0 t . 4.1.

. 4.1.

, - .

(l) , . (l = const) , t.

, .

, . , l . , , , , .

, t1 t2 (. . 4.1) , , , . , , , , .

, , .

( ), : 1) , 2) , 3) .

l T () , l (. 4.2).

. 4.2.

T, , mT , , s T mT = s T = 1/l.

( ), , , T 1, T 2, 3,... (, , . 4.3).

. 4.3.

, . () , .





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