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Nonhomogeneous stochastic semigroups
Springer Science and Business Media LLC - Tập 33 - Trang 333-338 - 1981
G. P. Butsan, S. P. Butsan
Transitive Maps on Topological Spaces
Springer Science and Business Media LLC - Tập 65 - Trang 1293-1318 - 2014
E. Bilokopytov, S. F. Kolyada
In the present paper, we consider the problem of existence of nonequivalent definitions of topological transitivity, which is a classical problem of the topological dynamics. In particular, we use the fact that all available definitions of this kind imply a condition imposed on the dynamical system. The main result of our investigations is the complete classification of these dynamical systems.
Inverse Problem with Free Boundary for Heat Equation
Springer Science and Business Media LLC - Tập 55 Số 7 - Trang 1086-1098 - 2003
M. I. Ivanchov
Structure of separative dedekind groups
Springer Science and Business Media LLC - Tập 48 - Trang 1522-1532 - 1996
M. F. Kuzennyi, M. M. Semko
We describe groups such that all their subgroups that do not belong to a certain proper subgroup are normal. We also solve the separate problem of description of such groups with normal non-Abelian subgroups.
Higher-Order Relations for Derivatives of Nonlinear Diffusion Semigroups
Springer Science and Business Media LLC - Tập 53 - Trang 134-140 - 2001
A. Val. Antonyuk, A. Vik. Antonyuk
We show that a special choice of the Cameron–Martin direction in the characterization of the Wiener measure via the formula of integration by parts leads to a set of natural representations for derivatives of nonlinear diffusion semigroups. In particular, we obtain a final solution of the non-Lipschitz singularities in the Malliavin calculus.
Locally nilpotent topological groups with Abelian subgroups of finite rank
Springer Science and Business Media LLC - Tập 34 - Trang 470-475 - 1982
Yu. N. Pilipenko, V. M. Poletskikh
Approximation of the Classes B p,θ Ω of Periodic Functions of Many Variables in Uniform Metric
Springer Science and Business Media LLC - Tập 54 - Trang 1885-1896 - 2002
S. A. Stasyuk
We obtain order estimates for the best M-term trigonometric approximations and approximations by Fourier sums for the classes B ,θ Ω of periodic functions of many variables in the uniform metric.
Galilei-invariant higher-order equations of burgers and korteweg-de vries types
Springer Science and Business Media LLC - Tập 48 - Trang 1799-1814 - 1996
W. I. Fushchych, V. M. Boiko
We describe nonlinear Galilei-invariant higher-order equations of Burgers and Korteweg-de Vries types. We study symmetry properties of these equations and construct new nonlinear extensions for the Galilei algebra AG(1, 1).
Numerical method of solving boundary-value problems for integrodifferential equations with deviating argument
Springer Science and Business Media LLC - Tập 41 - Trang 734-739 - 1989
I. M. Cherevko, I. V. Yakimov
Approximation of classes of analytic functions by algebraic polynomials and kolmogorov widths
Springer Science and Business Media LLC - Tập 48 - Trang 267-282 - 1996
V. S. Romanyuk
We obtain estimates of the best polynomial approximations, uniform in the closure B of Faber domains of the complex plane ℂ, for functions continuous in B and defined by Cauchy-type integrals with densities possessing certain generalized differential properties. We establish estimates exact in order for the Kolmogorov widths of classes of such functions in relevant functional spaces.
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