Results 1 to 10 of about 213,365 (281)
Galois coverings of representation-infinite algebras
Commentarii Mathematici Helvetici, 1987 If R is a locally bounded K-category, K some algebraically closed field, G a group of K-linear automorphisms of R acting freely on the objects of R, then it was proved by \textit{P. Gabriel} [in: Representations of algebras, Lect. Notes Math. 903, 68-105 (1981; Zbl 0481.16008), \textit{K. Bongartz}, \textit{P. Gabriel}, Invent. Math. 65, 331-378 (1982;
Skowronski, Andrzej, Dowbor, Piotr
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Applied Sciences, 2022 In this paper, an image analysis framework is formulated for Landsat-8 Operational Land Imager and Thermal Infrared Sensor (OLI/TIRS) scenes using the R programming language.
Polina Lemenkova, Olivier Debeir
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Covering certain monolithic groups with proper subgroups
, 2012 Given a finite non-cyclic group $G$, call $\sigma(G)$ the least number of proper subgroups of $G$ needed to cover $G$. In this paper we give lower and upper bounds for $\sigma(G)$ for $G$ a group with a unique minimal normal subgroup $N$ isomorphic to ...
Garonzi, Martino
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On the Hilbert series of vertex cover algebras of Cohen-Macaulay bipartite graphs
Le Matematiche, 2010 We study the Hilbert function and the Hilbert series of the vertex cover algebra A(G), where G is a Cohen-Macaulay bipartite graph.
Cristian Ion
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The projectable hull of an archimedean $ell$-group with weak unit [PDF]
Categories and General Algebraic Structures with Applications, 2017 The much-studied projectable hull of an $ell$-group $Gleq pG$ is an essential extension, so that, in the case that $G$ is archimedean with weak unit, ``$Gin {bf W}$", we have for the Yosida representation spaces a ``covering map" $YG leftarrow YpG$.
Anthony W. Hager, Warren Wm. McGovern
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Quantum Mechanics On Spaces With Finite Fundamental Group [PDF]
, 1995 We consider in general terms dynamical systems with finite-dimensional, non-simply connected configuration-spaces. The fundamental group is assumed to be finite.
Giulini, Domenico
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Covering dimension for nuclear C∗-algebras
Journal of Functional Analysis, 2003 We introduce the completely positive rank, a notion of covering dimension for nuclear $C^*$-algebras and analyze some of its properties. The completely positive rank behaves nicely with respect to direct sums, quotients, ideals and inductive limits. For abelian $C^*$-algebras it coincides with covering dimension of the spectrum and there are similar ...
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Automatic Deduction in Dynamic Geometry using Sage [PDF]
Electronic Proceedings in Theoretical Computer Science, 2012 We present a symbolic tool that provides robust algebraic methods to handle automatic deduction tasks for a dynamic geometry construction. The main prototype has been developed as two different worksheets for the open source computer algebra system Sage,
Francisco Botana, Miguel A. Abánades
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Cleaning Data With Selection Rules
IEEE Access, 2022 In this paper, we propose and study a type of tuple-level constraint that arises from the selection operator $\sigma $ of relational algebra and that closely resembles the concepts of tuple-level denial constraints.
Toon Boeckling +2 more
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Path Transmissibility Analysis Considering Two Types of Correlations in Hydropower Stations
Journal of Applied Mathematics, 2013 A new vibration model is built by introducing the head-cover vibration transfer path based on a previous analysis of the vertical vibration model for hydropower station units and powerhouses.
Baoping Zhi, Zhenyue Ma
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