Results 61 to 70 of about 55,778 (240)
Approximation of Time-Frequency Shift Equivariant Maps by Neural Networks
MathematicsBased on finite-dimensional time-frequency analysis, we study the properties of time-frequency shift equivariant maps that are generally nonlinear. We first establish a one-to-one correspondence between Λ-equivariant maps and certain phase-homogeneous ...
Dae Gwan Lee
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Augmented, free and tensor generalized digroups
Open Mathematics, 2019 The concept of generalized digroup was proposed by Salazar-Díaz, Velásquez and Wills-Toro in their paper “Generalized digroups” as a non trivial extension of groups.
Rodríguez-Nieto José Gregorio +2 more
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Equivariant maps and bimodule projections
Journal of Functional Analysis, 2006 15 ...
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Equivariant toric geometry and Euler–Maclaurin formulae
Communications on Pure and Applied Mathematics, EarlyView.Abstract We first investigate torus‐equivariant motivic characteristic classes of toric varieties, and then apply them via the equivariant Riemann–Roch formalism to prove very general Euler–Maclaurin‐type formulae for full‐dimensional simple lattice polytopes.
Sylvain E. Cappell +3 more
wiley +1 more source
Degree theory for 4‐dimensional asymptotically conical gradient expanding solitons
Communications on Pure and Applied Mathematics, EarlyView.Abstract We develop a new degree theory for 4‐dimensional, asymptotically conical gradient expanding solitons. Our theory implies the existence of gradient expanding solitons that are asymptotic to any given cone over S3$S^3$ with non‐negative scalar curvature. We also obtain a similar existence result for cones whose link is diffeomorphic to S3/Γ$S^3/\
Richard H. Bamler, Eric Chen
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On ’t Hooft defects, monopole bubbling and supersymmetric quantum mechanics
Journal of High Energy Physics, 2018 We revisit the localization computation of the expectation values of ’t Hooft operators in N $$ \mathcal{N} $$ = 2* SU(N) theory on ℝ3 × S 1. We show that the part of the answer arising from “monopole bubbling” on ℝ3 can be understood as an equivariant ...
T. Daniel Brennan +2 more
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Character varieties and harmonic maps to R-trees [PDF]
, 1998 We show that the Korevaar-Schoen limit of the sequence of equivariant harmonic maps corresponding to a sequence of irreducible $SL_2({\mathbb C})$ representations of the fundamental group of a compact Riemannian manifold is an equivariant harmonic map to
Daskalopoulos, Georgios +2 more
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Torsion in equivariant cohomology and Cohen-Macaulay G-actions
, 2010 We show that the well-known fact that the equivariant cohomology of a torus action is a torsion-free module if and only if the map induced by the inclusion of the fixed point set is injective generalises to actions of arbitrary compact connected Lie ...
Goertsches, Oliver, Rollenske, Sönke
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Vector bundles on bielliptic surfaces: Ulrich bundles and degree of irrationality
Mathematische Nachrichten, EarlyView.Abstract This paper deals with two problems about vector bundles on bielliptic surfaces. The first is to give a classification of Ulrich bundles on such surfaces S$S$, which depends on the topological type of S$S$. In doing so, we study the weak Brill–Noether property for moduli spaces of sheaves with isotropic Mukai vector. Adapting an idea of Moretti
Edoardo Mason
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Equivariant Surgery Theory: Construction of Equivariant Normal Maps
Publications of the Research Institute for Mathematical Sciences, 1995 Following an idea and a description of T. Petrie, many authors have constructed exotic smooth group actions using equivariant surgery. This involves the construction of suitable \(G\)-normal maps via \(G\)- transversality, and an arrangement that makes \(G\)-surgery obstructions vanish.
openaire +3 more sources