Results 11 to 20 of about 210,779 (252)
Special Triple Covers of Algebraic Surfaces
Documenta Mathematica, 2022 We study special triple covers f:T\to S of algebraic surfaces, where the Tschirnhausen bundle \mathcal{E}=\left(f_*\mathcal{O}_T/\mathcal{O}_S\right)^\vee is a quotient of a split rank three vector bundle, and we provide several ...
Nicolina Istrati +2 more
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Multipliers and Covers of Perfect Diassociative Algebras [PDF]
Journal of Algebra and Its Applications, 2022 The paper concerns perfect diassociative algebras and their implications to the theory of central extensions. It is first established that perfect diassociative algebras have strong ties with universal central extensions. Then, using a known characterization of the multiplier in terms of a free presentation, we obtain a special cover for perfect ...
Erik Mainellis
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Covering algebras II: Isomorphism of loop algebras [PDF]
Journal für die reine und angewandte Mathematik (Crelles Journal), 2004 This paper studies the loop algebras that arise from pairs consisting of a symmetrizable Kac-Moody Lie algebra $\g$ and a finite order automorphism $ $ of $\g$. We obtain necessary and sufficient conditions for two such loop algebras to be isomorphic.
Allison, Bruce +2 more
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Squarefree Vertex Cover Algebras [PDF]
Communications in Algebra, 2013 In this paper we introduce squarefree vertex cover algebras. We study the question when these algebras coincide with the ordinary vertex cover algebras and when these algebras are standard graded. In this context we exhibit a duality theorem for squarefree vertex cover algebras.
Bayati, Shamila, Rahmati, Farhad
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MINIMAL CLOZ-COVERS AND BOOLEAN ALGEBRAS [PDF]
Korean Journal of Mathematics, 2012 Summary: In this paper, we first show that for any space \(X\), there is a Boolean subalgebra \(\mathcal{G}(z_X)\) of \(R(X)\) containg \(\mathcal{G}(X)\). Let \(X\) be a strongly zero-dimensional space such that \(z_\beta^{-1}(X)\) is the minimal cloz-cover of \(X\), where \((E_{cc}(\beta X),\, z_\beta)\) is the minimal cloz-cover of \(\beta X\).
Chang-Il Kim
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A Characterisation of Morita Algebras in Terms of Covers [PDF]
Algebras and Representation Theory, 2021 AbstractA pair (A, P) is called a cover of EndA(P)op if the Schur functor HomA(P,−) is fully faithful on the full subcategory of projective A-modules, for a given projective A-module P. By definition, Morita algebras are the covers of self-injective algebras and then P is a faithful projective-injective module.
Tiago Cruz
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Covering and gluing of algebras and differential algebras [PDF]
Journal of Geometry and Physics, 2000 Extending work of Budzynski and Kondracki, we investigate coverings and gluings of algebras and differential algebras. We describe in detail the gluing of two quantum discs along their classical subspace, giving a C*-algebra isomorphic to a certain Podles sphere, as well as the gluing of U_{\sqrt{q}}(sl_2)-covariant differential calculi on the discs.
Calow, Dirk, Matthes, Rainer
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Completeness for the coalgebraic cover modality [PDF]
Logical Methods in Computer Science, 2012 We study the finitary version of the coalgebraic logic introduced by L. Moss. The syntax of this logic, which is introduced uniformly with respect to a coalgebraic type functor, required to preserve weak pullbacks, extends that of classical propositional
Clemens Kupke +2 more
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The Center Of A Generalized Effect Algebra
Demonstratio Mathematica, 2014 In this article, we study the center of a generalized effect algebra (GEA), relate it to the exocenter, and in case the GEA is centrally orthocomplete (a COGEA), relate it to the exocentral cover system. Our main results are that the center of a COGEA is
Foulis D. J., Pulmannová S.
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A Blended Learning Approach for an Introductory Computer Science Course
Education Sciences, 2021 In this paper, we present our experience with redesigning an introductory computer science course for (electrical) engineers with blended learning concepts.
Anna Förster +9 more
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