Results 71 to 80 of about 11,763 (233)

Automorphisms of abelian group extensions [PDF]

, 2010
Let 1→N→G→H→1 be an abelian extension. The purpose of this paper is to study the problem of extending automorphisms of N and lifting automorphisms of H to certain automorphisms of ...
Yadav, Manoj K., Passi, I. B. S., Singh, Mahender, Mahender Singh, Passi, I.B.S., Manoj K. Yadav, I.B.S. Passi   +6 more
core   +1 more source

Eventually Periodic Points of Infra-Nil Endomorphisms

Fixed Point Theory and Applications, 2010
Hyperbolic toral automorphisms provide important examples of chaotic dynamical systems. Generalizing automorphisms on tori, we study (infra-)nil endomorphisms defined on (infra-)nilmanifolds.
Ha KuYong, Kim HyunJung, Lee JongBum
doaj   +2 more sources

On Marginal Automorphisms of Free Nilpotent Lie Algebras

Journal of Mathematics, 2020
Let L be the free nilpotent Lie algebra of finite rank over a field of characteristic zero. We define the concepts of marginal ideals and marginal automorphisms of L, and we give some results on marginal automorphisms.
Özge Öztekin
doaj   +1 more source

On the group of automorphisms of the algebra of plural numbers

Дифференциальная геометрия многообразий фигур, 2023
The algebra of dual numbers was first introduced by V. K. Clifford in 1873. The algebras of plural and dual numbers are analogous to the algebra of complex numbers. Dual numbers form an algebra, but not a field, because only dual numbers with a real part
A. Ya. Sultanov, G. A. Sultanova, O. A. Monakhova   +2 more
doaj   +1 more source

Signed Projective Cubes, a Homomorphism Point of View

Journal of Graph Theory, Volume 113, Issue 1, Page 38-56, September 2026.
ABSTRACT The (signed) projective cubes, as a special class of graphs closely related to the hypercubes, are on the crossroad of geometry, algebra, discrete mathematics and linear algebra. Defined as Cayley graphs on binary groups, they represent basic linear dependencies.
Meirun Chen, Reza Naserasr, Alessandra Sarti   +2 more
wiley   +1 more source

Graph automorphisms of a finite modular lattice [PDF]

, 1999
summary:This paper deals with the relations between graph automorphisms and direct factors of a semimodular lattice of locally finite ...
Jakubík, Ján, Csontóová, Mária
core   +1 more source

Lifting automorphisms of subgroups of direct products of cyclic $p$-groups [PDF]

International Journal of Group Theory
Let $\Gamma$ be a finite group. A subgroup $H$ of $\Gamma$ is called ``fully liftable" in $\Gamma$ if every automorphism of $H$ is the restriction of an automorphism of $\Gamma$.
Jill Dietz
doaj   +1 more source

Free semigroups of large critical exponent

Journal of Topology, Volume 19, Issue 3, September 2026.
Abstract For a convergence group equipped with an expanding coarse‐cocycle, we construct finitely generated free subsemigroups, which we call Bishop−−Jonessemigroups$\textit{Bishop--Jones semigroups}$, of critical exponent arbitrarily close to but strictly less than the critical exponent of the ambient group.
Aleksander Skenderi
wiley   +1 more source

Automorphisms of three-dimensional handlebodies [PDF]

, 2002
This paper gives a classification up to isotopy of automorphisms (self-homeomorphisms) of three-dimensional handlebodies and compression bodies, analogous to the Nielsen–Thurston classification of automorphisms of surfaces.
Oertel, Ulrich, Ulrich Oertel
core   +1 more source

Invariant Measure and Universality of the 2D Yang–Mills Langevin Dynamic

Communications on Pure and Applied Mathematics, Volume 79, Issue 8, Page 1973-2102, August 2026.
ABSTRACT We prove that the Yang–Mills (YM) measure for the trivial principal bundle over the two‐dimensional torus, with any connected, compact structure group, is invariant for the associated renormalised Langevin dynamic. Our argument relies on a combination of regularity structures, lattice gauge‐fixing and Bourgain's method for invariant measures ...
Ilya Chevyrev, Hao Shen
wiley   +1 more source