Results 31 to 40 of about 10,652 (93)

A finitely presented group of piecewise projective homeomorphisms [PDF]

open access: yes, 2014
In this article we will describe a finitely presented subgroup of Monod's group of piecewise projective homeomorphisms of R. This in particular provides a new example of a finitely presented group which is nonamenable and yet does not contain a ...
Justin, Tatch Moore, Yash Lodha
core  

A note on the invariance in the nonabelian tensor product

open access: yes, 2013
In the nonabelian tensor product $G\otimes H$ of two groups $G$ and $H$ many properties pass from $G$ and $H$ to $G\otimes H$. There is a wide literature for different properties involved in this passage.
Corrado Tanasi   +2 more
core   +1 more source

Orbifold Kodaira–Spencer maps and closed‐string mirror symmetry for punctured Riemann surfaces

open access: yesJournal of the London Mathematical Society, Volume 111, Issue 5, May 2025.
Abstract When a Weinstein manifold admits an action of a finite abelian group, we propose its mirror construction following the equivariant 2D TQFT‐type construction, and obtain as a mirror the orbifolding of the mirror of the quotient with respect to the induced dual group action. As an application, we construct an orbifold Landau–Ginzburg mirror of a
Hansol Hong, Hyeongjun Jin, Sangwook Lee
wiley   +1 more source

On a common refinement of Stark units and Gross–Stark units

open access: yesJournal of the London Mathematical Society, Volume 111, Issue 4, April 2025.
Abstract The purpose of this paper is to formulate and study a common refinement of a version of Stark's conjecture and its p$p$‐adic analogue, in terms of Fontaine's p$p$‐adic period ring. We construct period‐ring‐valued functions under a generalization of Yoshida's conjecture on the transcendental parts of CM‐periods.
Tomokazu Kashio
wiley   +1 more source

Nonabelian Monopoles

open access: yes, 2004
We study topological as well as dynamical properties of BPS nonabelian magnetic monopoles of Goddard-Nuyts-Olive-Weinberg type in $ G=SU(N)$, $USp(2N)$ and SO(N) gauge theories, spontaneously broken to nonabelian subgroups $H$.
't Hooft   +60 more
core   +2 more sources

Twisted conjugacy in soluble arithmetic groups

open access: yesMathematische Nachrichten, Volume 298, Issue 3, Page 763-793, March 2025.
Abstract Reidemeister numbers of group automorphisms encode the number of twisted conjugacy classes of groups and might yield information about self‐maps of spaces related to the given objects. Here, we address a question posed by Gonçalves and Wong in the mid‐2000s: we construct an infinite series of compact connected solvmanifolds (that are not ...
Paula M. Lins de Araujo   +1 more
wiley   +1 more source

Quantum Nonabelian Monopoles

open access: yes, 2004
We discuss quantum mechanical and topological aspects of nonabelian monopoles. Related recent results on nonabelian vortices are also mentioned.Comment: Latex 13 pages, 2 figures, Talk at "Continuous Advances in QCD 2004", Univ.
Konishi, K.
core   +2 more sources

On vertex‐transitive graphs with a unique hamiltonian cycle

open access: yesJournal of Graph Theory, Volume 108, Issue 1, Page 65-99, January 2025.
Abstract A graph is said to be uniquely hamiltonian if it has a unique hamiltonian cycle. For a natural extension of this concept to infinite graphs, we find all uniquely hamiltonian vertex‐transitive graphs with finitely many ends, and also discuss some examples with infinitely many ends.
Babak Miraftab, Dave Witte Morris
wiley   +1 more source

Exact solitary wave solutions for a coupled gKdV–Schrödinger system by a new ODE reduction method

open access: yesStudies in Applied Mathematics, Volume 154, Issue 1, January 2025.
Abstract A new method is developed for finding exact solitary wave solutions of a generalized Korteweg–de Vries equation with p$p$‐power nonlinearity coupled to a linear Schrödinger equation arising in many different physical applications. This method yields 22 solution families, with p=1,2,3,4$p=1,2,3,4$.
Stephen C. Anco   +3 more
wiley   +1 more source

Auto‐Bäcklund Transformations for New Matrix First and Second Painlevé Hierarchies

open access: yesStudies in Applied Mathematics, Volume 154, Issue 1, January 2025.
ABSTRACT We define a new doubly extended matrix second Painlevé hierarchy, and in addition a new extended matrix first Painlevé hierarchy. For the former, we present three auto‐Bäcklund transformations (auto‐BTs) that constitute nontrivial extensions to our new hierarchy of previously derived results on the auto‐BTs of a much simpler matrix second ...
Pilar Ruiz Gordoa, Andrew Pickering
wiley   +1 more source

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