Widths of Sets Related to Levy Process

For any natural m a weak asymptotic behaviour has been found of Kolmogorov widths of the set φ(K_m) where p - a Levy process defined in R^m space (m-parametric Brownian motion), K_m = [0,1]^m - a unit cube in R^m. An exact value problem for widths of the set p(K1) has been considered and reduced to the investigation of the second-order nonlinear differential equations system (Wiener spiral). An algorithm is offered for calculation of approximated values of the Wiener spiral widths.