Results 71 to 80 of about 4,480 (224)
Algebra universalis, 2017 This paper, except the appendix, will appear in Algebra Universalis.
Cornejo, Juan Manuel +1 more
openaire +3 more sources
Proceedings of the London Mathematical Society, Volume 133, Issue 2, August 2026.Abstract This paper investigates the maximal subgroups of a free projection‐generated regular ∗$*$‐semigroup PG(P)${{\textsf {PG}}}(P)$ over a projection algebra P$P$, and their relationship to the maximal subgroups of the free idempotent‐generated semigroup IG(E)${{\textsf {IG}}}(E)$ over the corresponding biordered set E=E(P)$E = {{\textsf {E}}}(P)$.
James East +3 more
wiley +1 more source
The lattice of ideals in the Steinberg algebra of a strongly effective groupoid [PDF]
, 2023 A topological groupoid is generalization of topological group where the binary operation is only partially defined. Ample groupoids are a special class of topological groupoid that have an especially well behaved topology.
Clark, Lisa Orloff
core
Various notions of amenability for not necessarily locally compact groupoids [PDF]
Surveys in Mathematics and its Applications, 2014 We start with a groupoid G endowed with a family W of subsets mimicking the properties of a neighborhood basis of the unit space (of a topological groupoid with paracompact unit space).
Mădălina Roxana Buneci
doaj
The Upper and Lower Approximations in Rough Subgroupoid of a Groupoid
Moroccan Journal of Pure and Applied Analysis, 2018 In this article, we introduce the concept of rough subgroupoid of a groupoid as a generalization of a rough subgroup and give some features about the lower and the upper approximations in a groupoid [1]. We give some of the characterization of them.
Tasbozan H., Icen I.
doaj +1 more source
GROUPOID MORPHISMS IN TERMS OF ACTIONS [PDF]
Journal of Research and Innovation for Sustainable Society, 2020 The purpose of this paper is to introduce a notion of morphism between two groupoid defined in terms of groupoid actions and we prove that groupoids as objects and equivalence classes of certain type of such morhisms form category which is equivalent ...
Mădălina Roxana BUNECI
doaj
Groupoids and Coherent States [PDF]
Open Systems & Information Dynamics, 2019 Schwinger’s algebra of selective measurements has a natural interpretation in terms of groupoids. This approach is pushed forward in this paper to show that the theory of coherent states has a natural setting in the framework of groupoids. Thus given a quantum mechanical system with associated Hilbert space determined by a representation of a groupoid,
Fabio Di Cosmo +2 more
openaire +3 more sources
On the theories classified by an étendue
Bulletin of the London Mathematical Society, Volume 58, Issue 7, July 2026.Abstract We give a model‐theoretic characterisation of the geometric theories classified by étendues—the ‘locally localic’ topoi. They are the theories where each model is determined, syntactically and semantically, by any witness of a fixed collection of formulae.
Joshua L. Wrigley
wiley +1 more source
Journal of New Theory, 2015 – In this paper, Smarandache soft groupoids shortly (SS-groupoids) are introduced as a generalization of Smarandache Soft semigroups (SS-semigroups) .
Mumtaz Ali
doaj
Category of Source Proper Group Space
Zanco Journal of Pure and Applied Sciences, 2019 Our main interest in this study is to look for group space and the topological groupoid. In this paper, we give some results of group space and the topological groupoid, which are properties source proper group space ...
Taghreed Hur Majeed, Suaad Ali Mohammed
doaj +1 more source