Results 1 to 10 of about 45,223 (166)
On the proportionality of covolumes of discrete subgroups
Mathematische Annalen, 1986 If \(G_ S=\prod_{v\in S}G_ v\) is a Lie group without compact factors, where the finitely many \(G_ v\), \(v\in S\), are real or p-adic semisimple Lie groups, and if \(\Gamma_ S\subset G_ S\) is a discrete subgroup of finite covolume with respect to some invariant measure on \(G_ S\), then it is shown that there exist an invariant measure \(\omega\) on
G A Margulis
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Discrete subgroups of Möbius transformations
Journal of Mathematical Analysis and Applications, 2013 It is well known that Jörgensen's inequality gives a necessary condition for a nonelementary two generator subgroup of Möbius transformations acting in \(\hat{\mathbb{R}}^{2}\) to be discrete. \textit{G. J. Martin} [Acta Math. 163, No. 3--4, 253--289 (1989; Zbl 0698.20037)] generalized this to \(\hat{\mathbb{R}}^{n}\).
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An Affine Model of a Riemann Surface Associated to a Schwarz–Christoffel Mapping
Axioms, 2021 In this paper, we construct an affine model of a Riemann surface with a flat Riemannian metric associated to a Schwarz–Christoffel mapping of the upper half plane onto a rational triangle.
Richard Cushman
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A multiplicity theorem for Fréchet spaces
Доповiдi Нацiональної академiї наук України, 2022 This note serves to announce a multiplicity result for Keller C1c -functionals on Fréchet spaces which are invariant under the action of a discrete subgroup.
K.A. Eftekharinasab
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Discrete theta angles, symmetries and anomalies
SciPost Physics, 2021 Gauge theories in various dimensions often admit discrete theta angles, that arise from gauging a global symmetry with an additional symmetry protected topological (SPT) phase.
Po-Shen Hsin, Ho Tat Lam
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Children, 2021 In the current study, an observational procedure, recorded in video, was used to evaluate the quality of parent-child interactions in a sample of vulnerable Portuguese families (n = 47) with school-aged children followed by Child Protective Services (CPS)
Ananda Stuart +2 more
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An Impulse-Quantizing Synchronization Approach for Mixed Continuous-Discrete Complex Networks
Discrete Dynamics in Nature and Society, 2023 This paper presents synchronization of mixed continuous-discrete complex network via impulse-quantizing approach. A delay-partitioning group strategy is proposed and impulse-quantizing control is designed to derive theoretical criteria ensuring scale ...
Na Hu +3 more
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Tensor network models of AdS/qCFT [PDF]
Quantum, 2022 The study of critical quantum many-body systems through conformal field theory (CFT) is one of the pillars of modern quantum physics. Certain CFTs are also understood to be dual to higher-dimensional theories of gravity via the anti-de Sitter/conformal ...
Alexander Jahn +2 more
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Remark on Discrete Subgroups [PDF]
Proceedings of the American Mathematical Society, 1971 One wants to know the extent to which a locally compact group G is determined by the isomorphism class of a discrete uniform subgroup Γ
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On Subgrouping Continuous Processes in Discrete Time
Multivariate Behavioral Research, 2022 The vector autoregression (VAR) and its flavors have seen a boom in the behavioral sciences over the past decades due to their relative simplicity for analyzing N = 1 time-series and calls to bring the person back to the scientific study of psychology.
Park, Jonathan J. +3 more
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