Vol. 89 (1997): Ann. Sofia Univ. Fac. Math and Inf.

Articles

• Editorial note

  Editor

  3-4

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• Nikola Obreshkoff (1896-1963)

  Editor

  7

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• Scientific programme of the Session

  Editor

  8

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• Opening address to the Session (in Bulgarian)

  Todor Genchev

  9-10

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• Nikola Obreshkoff (1896-1963). Encomium

  Boyan Penkov

  11-17

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• On a formula of Obreshkoff

  Borislav Bojanov

  19-21

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• On the investigations of Nikola Obreshkoff connected with the regularly monotonic functions (in Bulgarian, summary in English)

  Todor Genchev

  23-35

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• Zeroes of polynomials and entire functions in the works of N. Obreshkoff

  Peter Rusev

  37-46

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• The contribution of Nikola Obreshkoff to the theory of diophantine approximation

  Tonko Tonkov

  47-58

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• Hyperbolic and euclidean distance functions

  Walter Benz

  59-67

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• Tikhonov's theorem for functional differential inclusions

  Tzanko Donchev, Iordan Slavov

  69-78

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• Complete systems of Bessel and inversed Bessel polynomials in spaces of holomorphic functions

  Jordanka Paneva-Konovska

  79-88

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• An algorithmic approach to some problems on the representation of natural numbers as sums without repetitions

  Dimiter Skordev

  89-99

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• Constructing minimal pairs of degrees

  Ivan Soskov

  101-112

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• A simple proof of a coincidence theorem of Rubinstein-Walsh and generalizations

  Pavel Todorov

  113-116

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• Study of the scientific work by quantitative methods: some results on Academician Nikola Obreshkoff's works

  Vassily Todorov, Mara Apostolova, Emilia Brankova, Stefka Zlateva, Veneta Teneva, Dimitar Khristov

  117-127

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• A first-order in thickness model for flexural deformations of geometrically non-linear shells

  Christo Christov

  129-140

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• Perturbations in a champagne bottle

  Georgy Georgiev

  141-157

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• On the "triangular" inequality in the theory of two-phase random media

  Konstantin Markov

  159-166

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• Fourier-Galerkin algorithm for 2D localized solutions

  Christo Christov

  169-179

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• Mouvement d'une sphère homogène dans un cylindre horizontal avec un moment résistant de frottement

  Sonia Deneva

  181-184

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• Cooperation of client routines in client-server network architecture without using of special monitor routine on server

  Peter Dimov

  185-191

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• On the brittle fracture of a pin-jointed frame

  Galja Draganova, Konstantin Markov

  193-202

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• Some examples of lexicographic order algorithms and some open combinatorial problems

  Dimitar Vandev

  203-215

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• On the effective conductivity of a class of random dispersions

  Krassimir Zvyatkov

  217-235

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