Results 41 to 50 of about 213,365 (281)
Covering Numbers for Simple Algebraic Groups
Vietnam Journal of Mathematics, 2023 AbstractLet G be a simple algebraic group over an algebraically closed field, and let C be a noncentral conjugacy class of G. The covering number cn(G,C) is defined to be the minimal k such that G = Ck, where Ck = {c1c2⋯ck : ci ∈ C}. We prove that $cn(G,C) \le c \frac {\dim G}{\dim C}$ c n (
Liebeck, M, Simion, I
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Spatio-temporal evaluation of ecosystem services in the São Paulo Macrometropolis, Brazil
Revista Brasileira de Ciências Ambientais, 2023 Urbanization is one of the key factors that drive changes in ecosystem services. Although various studies have analyzed relationships between land-cover change and ecosystem services degradation, few have explored the impacts in future scenarios in mega ...
Priscila Ikematsu +1 more
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Conflicts and future scenarios of land use in eastern Mexico
Forest Systems, 2022 Aim of study: To develop an analytical framework for analyzing and assessing the land-use changes and conflicts, based on low requirements of information and useful in developing countries.
Gabriel Chablé-Rodríguez +4 more
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On the classification of quantum W-algebras
, 1991 In this paper we consider the structure of general quantum W-algebras. We introduce the notions of deformability, positive-definiteness, and reductivity of a W-algebra.
Bowcock, P., Watts, G
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Algebras with cycle-finite Galois coverings [PDF]
Transactions of the American Mathematical Society, 2011 It is proved that every finite-dimensional algebra over an algebraically closed field which admits a cycle-finite Galois covering with torsion-free Galois group is tame, and a description of the indecomposable finite-dimensional modules over these algebras is given.
de la Peña, José A. +1 more
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The derived category of a non generic cubic fourfold containing a plane
, 2017 We describe an Azumaya algebra on the resolution of singularities of the double cover of a plane ramified along a nodal sextic associated to a non generic cubic fourfold containing a plane.
Moschetti, Riccardo
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The pivotal cover and Frobenius-Schur indicators [PDF]
, 2015 In this paper, we introduce the notion of the pivotal cover $\mathcal{C}^{\mathsf{piv}}$ of a left rigid monoidal category $\mathcal{C}$ to develop a theoretical foundation for the theory of Frobenius-Schur (FS) indicators in "non-pivotal" settings.
Shimizu, Kenichi
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Closed form solution for p-curves in SO(4) [PDF]
, 2012 This paper describes the solution for p-curves in SO(4) and gives its closed form. The rotational symmetry was exploited in order to simplify the algebra.
Biggs, James +2 more
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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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Vector fields on nonorientable surfaces
International Journal of Mathematics and Mathematical Sciences, 2003 A one-to-one correspondence is established between the germs of functions and tangent vectors on a NOS X and the bi-germs of functions, respectively, elementary fields of tangent vectors (EFTV) on the orientable double cover of X.
Ilie Barza, Dorin Ghisa
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