Robin Harte, Mostafa Mbekhta (1993)
Studia Mathematica
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Commutativity and continuity conditions for the Moore-Penrose inverse and the "conorm" are established in a C*-algebra; moreover, spectral permanence and B*-properties for the conorm are proved.
Zagorodnyuk, S. M. (2011)
Serdica Mathematical Journal
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2000 Mathematics Subject Classification: 15A29. In this paper we introduced a notion of the generalized spectral function for a matrix J = (gk,l)k,l = 0 Ґ, gk,l О C, such that gk,l = 0, if |k-l | > N; gk,k+N = 1, and gk,k-N № 0. Here N is a fixed positive integer. The direct and inverse spectral problems for such matrices are stated and solved. An integral representation for the generalized spectral function is obtained.
Ding, Xie Ping, Kim, Won Kyu, Tan, Kok-Keong (1994)
International Journal of Mathematics and Mathematical Sciences
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Echi, Othman, Gargouri, Riyadh (2004)
The New York Journal of Mathematics [electronic only]
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Ryo Ohashi (2007)
Colloquium Mathematicae
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It was proved in [HM] that each topological group (G,·,τ) may be embedded into a connected topological group (Ĝ,•,τ̂). In fact, two methods of introducing τ̂ were given. In this note we show relations between them.
Belaid, Karim, Echi, Othman, Gargouri, Riyadh (2005)
International Journal of Mathematics and Mathematical Sciences
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Rastislav Teglársky (1983)
Fundamenta Mathematicae
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Krzysztof Ciepliński, Zbigniew Leśniak (2013)
Banach Center Publications
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In this paper, recent results on the existence and uniqueness of (continuous and homeomorphic) solutions φ of the equation φ ∘ f = g ∘ φ (f and g are given self-maps of an interval or the circle) are surveyed. Some applications of these results as well as the outcomes concerning systems of such equations are also presented.
Choban, Mitrofan, Kenderov, Petar, Moors, Warren (2012)
Union of Bulgarian Mathematicians
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Митрофан М. Чобан, Петър Ст. Кендеров, Уорън Б. Муурс - Полу-топологична група (съответно, топологична група) е група, снабдена с топология, относно която груповата оперция произведение е частично непрекъсната по всяка от променливите (съответно, непрекъсната по съвкупност от променливите и обратната операция е също непрекъсната). В настоящата работа ние даваме условия, от топологичен характер, една полу-топологична група да е всъщност топологична група. Например, ние показваме, че...
Yukinobu Yajima (1984)
Fundamenta Mathematicae
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Luigi Scarso (2011)
Zpravodaj Československého sdružení uživatelů TeXu
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Starting from release 9 AdobeReader, the reference PDF viewer from Adobe, has a Flash player embedded. The recent addition to CTAN of flashmovie package by Timo Hartmann prompted me to investigate the feasibility of an integration between ConTeXt-mkiv and swf figures. All tests were performed under Linux Ubuntu 8.04 with AdobeReader 9.3.3 installed, but I suppose they also work under Windows or Mac operating systems.
Hamlett, T.R., Rose, David (1990)
International Journal of Mathematics and Mathematical Sciences
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Trung Dinh Tran (2002)
Applications of Mathematics
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The paper defines and studies the Drazin inverse for a closed linear operator in a Banach space in the case that belongs to a spectral set of the spectrum of . Results are applied to extend a result of Krein on a nonhomogeneous second order differential equation in a Banach space.