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Convexity of Bounded Chebyshev Sets in Finite-dimensional Asymmetrically Normed Spaces

The well-known Tsar’kov’s characterisation of finite-dimensional Banach spaces in which every bounded Chebyshev set (bounded P-acyclic set) is convex is extended to the asymmetrical setting.

A direct method of stochastic optimization

 A direct method is proposed for stochastic programming. On each step the method uses solving of the linear program which is the linear approximation of input stochastic programs.