Results 1 to 10 of about 11,101 (105)

Endomorphisms and automorphisms of locally covariant quantum field theories [PDF]

open access: yesReviews in Mathematical Physics, 2013
In the framework of locally covariant quantum field theory, a theory is described as a functor from a category of spacetimes to a category of *-algebras.
Buchholz D.   +5 more
core   +3 more sources

Endomorphisms and anti-endomorphisms of some finite groupoids

open access: yesЖурнал Средневолжского математического общества, 2022
In this paper, we study anti-endomorphisms of some finite groupoids. Previously, special groupoids $S(k, q)$ of order $k(1+k)$ with a generating set of $k$ elements were introduced.
Litavrin Andrey V.
doaj   +1 more source

The description of the automorphism groups of finite-dimensional cyclic Leibniz algebras

open access: yesДоповiдi Нацiональної академiї наук України, 2022
In the study of Leibniz algebras, the information about their automorphisms (as well as about endomorphisms, derivations, etc.) is very useful. We describe the automorphism groups of finite-dimensional cyclic Leibniz algebras. In particular, we consider
L.A. Kurdachenko   +2 more
doaj   +1 more source

On Anti-endomorphisms of Groupoids

open access: yesИзвестия Иркутского государственного университета: Серия "Математика", 2023
In this paper, we study the problem of element-by-element description of the set of all anti-endomorphisms of an arbitrary groupoid. In particular, the structure of the set of all anti-automorphisms of a groupoid is studied. It turned out that the set of
A.V. Litavrin
doaj   +1 more source

Automorphisms and endomorphisms of lacunary hyperbolic groups [PDF]

open access: yesGroups, Geometry, and Dynamics, 2016
In this article we study automorphisms and endomorphisms of lacunary hyperbolic groups. We prove that every lacunary hyperbolic group is Hopfian, answering a question by Henry Wilton. In addition, we show that if a lacunary hyperbolic group has the fix point property for actions on $\mathbf R$-trees, then it is co-Hopfian and its outer automorphism ...
Coulon, R��mi, Guirardel, Vincent
openaire   +6 more sources

Endomorphisms of Some Groupoids of Order $k+k^2$

open access: yesИзвестия Иркутского государственного университета: Серия "Математика", 2020
Automorphisms and endomorphisms are actively used in various theoretical studies. In particular, the theoretical interest in the study of automorphisms is due to the possibility of representing elements of a group by automorphisms of a certain algebraic ...
A.V. Litavrin
doaj   +1 more source

Inertial properties in groups [PDF]

open access: yesInternational Journal of Group Theory, 2018
‎‎Let $G$ be a group and $p$ be an endomorphism of $G$‎. ‎A subgroup $H$ of $G$ is called $p$-inert if $H^pcap H$ has finite index in the image $H^p$‎. ‎The subgroups that are $p$-inert for all inner automorphisms of $G$ are widely known and studied in ...
Ulderico Dardano   +2 more
doaj   +1 more source

Partial automorphisms and injective partial endomorphisms of a finite undirected path [PDF]

open access: yesSemigroup Forum, 2021
In this paper, we study partial automorphisms and, more generally, injective partial endomorphisms of a finite undirected path from Semigroup Theory perspective. Our main objective is to give formulas for the ranks of the monoids $IEnd(P_n)$ and $PAut(P_n)$ of all injective partial endomorphisms and of all partial automorphisms of the undirected path ...
Dimitrova, Ilinka   +3 more
openaire   +4 more sources

Nonstandard Analysis, Deformation Quantization and Some Logical Aspects of (Non)Commutative Algebraic Geometry

open access: yesMathematics, 2020
This paper surveys results related to well-known works of B. Plotkin and V. Remeslennikov on the edge of algebra, logic and geometry. We start from a brief review of the paper and motivations. The first sections deal with model theory.
Alexei Kanel-Belov   +6 more
doaj   +1 more source

Labeled Trees and Localized Automorphisms of the Cuntz Algebras [PDF]

open access: yes, 2008
We initiate a detailed and systematic study of automorphisms of the Cuntz algebras $\O_n$ which preserve both the diagonal and the core $UHF$-subalgebra.
Conti, Roberto, Szymanski, Wojciech
core   +1 more source

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