Results 21 to 30 of about 62,563 (295)

Selective Survey on Spaces of Closed Subgroups of Topological Groups

open access: yesAxioms, 2018
We survey different topologizations of the set S ( G ) of closed subgroups of a topological group G and demonstrate some applications using Topological Groups, Model Theory, Geometric Group Theory, and Topological Dynamics.
Igor V. Protasov
doaj   +1 more source

Fluxes in exceptional field theory and threebrane sigma-models

open access: yesJournal of High Energy Physics, 2019
Starting from a higher Courant bracket associated to exceptional generalized geometry, we provide a systematic derivation of all types of fluxes and their Bianchi identities for four-dimensional compactifications of M-theory.
Athanasios Chatzistavrakidis   +3 more
doaj   +1 more source

Geometric Quantization and Foliation Reduction [PDF]

open access: yes, 2013
A standard question in the study of geometric quantization is whether symplectic reduction interacts nicely with the quantized theory, and in particular whether “quantization commutes with reduction.” Guillemin and Sternberg first proposed ...
Skerritt, Paul Michael
core   +1 more source

Geometric Structures in Group Theory (hybrid meeting) [PDF]

open access: yes, 2020
The conference focused on the use of geometric methods to study infinite groups and the interplay of group theory with other areas. One of the central techniques in geometric group theory is to study infinite discrete groups by their actions on nice ...

core   +2 more sources

From Practice to New Concepts: Geometric Properties of Groups

open access: yesPhilosophia Scientiæ, 2012
The paper aims to show how mathematical practice, in particular with visual representations, can lead to new mathematical results. The argument is based on a case study from a relatively recent and promising mathematical subject—geometric group theory ...
Irina Starikova
doaj   +1 more source

Polystable bundles and representations of their automorphisms

open access: yesComplex Manifolds, 2022
Using a quasi-linear version of Hodge theory, holomorphic vector bundles in a neighbourhood of a given polystable bundle on a compact Kähler manifold are shown to be (poly)stable if and only if their corresponding classes are (poly)stable in the sense of
Buchdahl Nicholas, Schumacher Georg
doaj   +1 more source

K-theory for group C*-algebras [PDF]

open access: yes, 2011
These notes are based on a lecture course given by the first author in the Sedano Winter School on K-theory held in Sedano, Spain, on January 22-27th of 2007.
Baum, Paul, Sanchez-Garcia, Ruben
core   +1 more source

Injective Hulls of Infinite Totally Split-Decomposable Metric Spaces

open access: yesAxioms
We extend the theory of splits in finite metric spaces to infinite ones. Within this more general framework, we investigate the class of spaces having metrics that are integer-valued and totally split-decomposable, as well as the polyhedral complex ...
Maël Pavón
doaj   +1 more source

Link between Lie Group Statistical Mechanics and Thermodynamics of Continua

open access: yesEntropy, 2016
In this work, we consider the value of the momentum map of the symplectic mechanics as an affine tensor called momentum tensor. From this point of view, we analyze the underlying geometric structure of the theories of Lie group statistical mechanics and ...
Géry de Saxcé
doaj   +1 more source

Cocientes algebraicos y Teoría de Invariantes Geométricos

open access: yesSelecciones Matemáticas, 2020
The quotient of an algebraic variety by action of an algebraic group does not always has a variety structure. The aim of this work is to describe a methodfor constructing good quotients, in the sense of Geometric invariant theory, in algebraicgeometry.
Nélida Medina García
doaj   +1 more source

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