## Moscow University Mathematics Bulletin, Volume 42 |

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### Contents

Peanowskivalued absolute retracts N L Koval 3 | 1 |

On an Aleksandrov problem V I Zaltsev 9 | 10 |

Points of continuity of semicontinuous setvalued mappings | 19 |

Copyright | |

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1987 by Allerton Allerton Press analogous arbitrary assume asymptotic author thanks bounded coabsolute coefficients compact space complete cone consider continuous convergence convex convex cones Corollary corresponding countable decomposition defined definition denote diameter differential domain eigenvalues elements equation estimate everywhere exists field finite formula Fourier series identity inequality integral interval irreducible kernels Lemma Lie algebras linear Lyapunov function mapping Markov Markov chains mass service Matematika Math measure method metric space Moscow University multiple natural number Nauk obtain open set operator orthogonal Pade approximations parameter polynomial present paper prime numbers problem proof of Theorem properties Proposition random relation repeated calls respect result Russian translation satisfied sequence singular solution spectrum SSSR stochastic process subalgebra subgroup subset Suppose T-ideal theory tion topological topological group University Mathematics Bulletin variables vector Vestn Vestnik Moskovskogo Universiteta virtue zero