( ) . . , , , (, ), , .
( ). , , , .
.
, ( ): ( ), ( ), (), ( ).
: (t) ;
i - (t);
xi(tj) (t), (i - j - . (t), xi (tj) .
.1 , t.
: , , . . , , . . . , , , , .
xi (t), i =1, 2,..., , , ..
N
q [X (t)]=lim 1/N Sg[ xi (t)], (1)
N ¥ i =1
g [ Xi (t)] , q. , , g[ Xi (t) ] = xi (t). , .
k- xk (t)
T
q [X(t)]= lim 1/T ò g[ xi (t)] dt. (2)
T ¥ 0