Results 1 to 10 of about 17,657 (236)

On representation type of the semigroup $S^0_{32}$ over an arbitrary field

open access: yesНауковий вісник Ужгородського університету. Серія: Математика і інформатика, 2018
In this paper we study matrix representations of a semigroup that is the simplest amplification of the wild semigroup S_{32}=, namely the semigroup S^0_{32}=. We prove that the semigroup S^0_{32} has finite representation type over an arbitrary field.
О. В. Зубарук
doaj   +1 more source

Free semigroups of large critical exponent

open access: yesJournal 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

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

open access: yesCommunications 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

Maximal Semigroups and the Support Of Gauss — Semigroups [PDF]

open access: yes, 1987
The purpose of this note is to describe a connection between the theory of probability measures on Lie groups and the Lie theory of semigroups. The objects under consideration will be one parameter semigroups of probability measures on Lie groups and their supports. We start by giving the basic definitions.
openaire   +3 more sources

Numerical Approach of a Porous Thermoelastic Problem With Microtemperatures and Fading Memory

open access: yesZAMM - Journal of Applied Mathematics and Mechanics / Zeitschrift für Angewandte Mathematik und Mechanik, Volume 106, Issue 7, July 2026.
ABSTRACT In this work, we study, from the numerical point of view, a porous thermoelastic problem with microtemperatures, where the thermal evolution is influenced by the history of both the temperature and microtemperatures. This leads to a coupled system of partial integro‐differential equations.
Noelia Bazarra   +3 more
wiley   +1 more source

On the closure of the extended bicyclic semigroup

open access: yesKarpatsʹkì Matematičnì Publìkacìï, 2011
In the paper we study the semigroup $mathscr{C}_{mathbb{Z}}$which is a generalization of the bicyclic semigroup. We describemain algebraic properties of the semigroup$mathscr{C}_{mathbb{Z}}$ and prove that every non-trivialcongruence $mathfrak{C}$ on the
I. R. Fihel, O. V. Gutik
doaj  

On the joins of semigroup varieties with the variety of commutative semigroups [PDF]

open access: yesProceedings of the American Mathematical Society, 1994
We show that the join of a variety of semigroups and the variety of all commutative semigroups is not finitely based, provided some weak conditions.
Sapir, M. V., Volkov, M. V.
openaire   +3 more sources

On the theories classified by an étendue

open access: yesBulletin 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

Representations of Certain Compact Semigroups by HL-Semigroups [PDF]

open access: yesTransactions of the American Mathematical Society, 1970
An HL -semigroup is defined to be a topological semigroup with the property that the Schützenberger group of each H \
Carruth, J. H., Clark, C. E.
openaire   +2 more sources

Extremal rate of convergence in continuous dynamics

open access: yesJournal of the London Mathematical Society, Volume 114, Issue 1, July 2026.
Abstract This paper deals with semigroups of holomorphic self‐maps of the upper half‐plane that exhibit an extremal (i.e., the slowest possible) rate of convergence to their Denjoy–Wolff point. The main novelty lies in the parabolic case of zero hyperbolic step.
Francisco J. Cruz‐Zamorano   +1 more
wiley   +1 more source

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