Results 41 to 50 of about 539,900 (289)

Derived crossed modules [PDF]

open access: yes, 2018
WOS: 000445962200006In this study, we interpret the notion of homotopy of morphisms in the category of crossed modules in a category C of groups with operations using the categorical equivalence between the categories of crossed modules and of internal ...
Şahan, Tunçar
core   +1 more source

Higher Chern-Simons based on (2-)crossed modules

open access: yesJournal of High Energy Physics, 2023
We present higher Chern-Simons theories based on (2-)crossed modules. We start from the generalized differential forms in Generalized Differential Calculus and define the corresponding generalized connections which consist of higher connections.
Danhua Song, Mengyao Wu, Ke Wu, Jie Yang
doaj   +1 more source

Braids and crossed modules [PDF]

open access: yesJournal of Group Theory, 2012
AbstractFor
openaire   +3 more sources

Cross-phase modulation imaging [PDF]

open access: yesOptics Letters, 2012
We demonstrate a cross-phase modulation measurement technique based on the sensitive detection of modulation transfer in a pump-probe setup. By modulating the amplitude of the pump beam and spectrally analyzing the probe beam, we achieve a rapid, background-free measurement of nonlinear phase modulation using power levels acceptable in biological ...
Prathyush, Samineni   +4 more
openaire   +2 more sources

Crossed modules and homology [PDF]

open access: yes, 1994
Two invariants are introduced for a crossed module and they are connected by a five-term exact sequence, associated to a extension of crossed modules. In the particular case of groups or G-modules these invariants give the homology groups of Eilenberg ...
Ladra, M.   +3 more
core   +1 more source

On central automorphisms of crossed modules

open access: yesKarpatsʹkì Matematičnì Publìkacìï, 2018
A crossed module $(T,G,\partial)$ consist of a group homomorphism $\partial:T\rightarrow G$ together with an action $(g,t)\rightarrow{}^{\,g}t$ of $G$ on $T$ satisfying $\partial(^{\,g}t)=g\partial(t)g^{-1}$ and $\,^{\partial(s)}t=sts^{-1}$, for all $g ...
M. Dehghani, B. Davvaz
doaj   +1 more source

Dynamical generalization of Yetter’s model based on a crossed module of discrete groups

open access: yesJournal of High Energy Physics, 2021
We construct a lattice model based on a crossed module of possibly non-abelian finite groups. It generalizes known topological quantum field theories, but in contrast to these models admits local physical excitations.
Arkadiusz Bochniak   +2 more
doaj   +1 more source

Yetter–Drinfeld Modules for Group-Cograded Hopf Quasigroups

open access: yesMathematics, 2022
Let H be a crossed group-cograded Hopf quasigroup. We first introduce the notion of p-Yetter–Drinfeld quasimodule over H. If the antipode of H is bijective, we show that the category YDQ(H) of Yetter–Drinfeld quasimodules over H is a crossed category ...
Huili Liu, Tao Yang, Lingli Zhu
doaj   +1 more source

Internal Cat-1 and XMod

open access: yesJournal of New Theory, 2022
In this study, internal categories in the category of cat-1 groups, 1-cat, are determined, and it is investigated whether there is a natural equivalence between the category of these categories and the category of internal categories within the category ...
Ummahan Ege Arslan, Elis Soylu Yılmaz
doaj   +1 more source

Further remarks on group-2-groupoids

open access: yesApplied General Topology, 2021
The aim of this paper is to obtain a group-2-groupoid as a 2-groupoid object in the category of groups and also as a special kind of an internal category in the category of group-groupoids.
Sedat Temel
doaj   +1 more source

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