(. processus ) , , , , ().
() , : { xi(t) } = X(t).
tk - : {xi(tk)}, tk ∈T, T
t∈T S U(t) Y(t). , . (, , ). , , y(t) S .
() {xi}, {Yj} .
T x X → Y.
x(t₁) ω=ω(t₁,t₂) , x(t₂) = ϕ(t₂;t₁,x(t₁),ω) , t₁<t₂. , .. . , , .
(τ, x), τ∈ x∈X // .
T X / / .
. ϕ ( ) : , , , , , .. , ( ω) (, , ) x(t1) / (t1, x)/ x(t2) = j(t2; t1, x(t1), ω) / (t2,ϕ(t2; t1, x(t1), ω)) /. S, ϕ.