Results 91 to 100 of about 108,334 (223)

Factorizable semigroups [PDF]

open access: yesPacific Journal of Mathematics, 1969
Abstract not ...
openaire   +3 more sources

Attractors and upper semicontinuity for an extensible beam with nonlocal structural damping

open access: yesZAMM - Journal of Applied Mathematics and Mechanics / Zeitschrift für Angewandte Mathematik und Mechanik, Volume 106, Issue 2, February 2026.
Abstract We analyze the asymptotic behavior of a class of extensible beam models governed by a nonlocal structural damping mechanism of the form φ(El)(−Δ)βut$\varphi (E_l)(-\Delta)^{\beta }u_t$, where β∈λ=(0,1]$\beta \in \lambda =(0,1]$. The coefficient φ$\varphi$ is a degenerate C1$C^{1}$‐function depending on the linear energy El$E_l$ of the system ...
Zayd Hajjej   +3 more
wiley   +1 more source

Combinatorial Properties and Characterization of Glued Semigroups

open access: yesAbstract and Applied Analysis, 2014
This work focuses on the combinatorial properties of glued semigroups and provides its combinatorial characterization. Some classical results for affine glued semigroups are generalized and some methods to obtain glued semigroups are developed.
J. I. García-García   +2 more
doaj   +1 more source

The Weierstrass semigroups on double covers of genus two curves [PDF]

open access: yes, 2013
We show that three numerical semigroups , and are of double covering type, i.e., the Weierstrass semigroups of ramification points on double covers of curves.
Harui, Takeshi   +2 more
core   +2 more sources

Pi Semigroup Algebras of Linear Semigroups [PDF]

open access: yesProceedings of the American Mathematical Society, 1990
It is well-known that if a semigroup algebra K [ S ] K[S] over a field K K satisfies a polynomial identity then the semigroup S S has the permutation property. The converse is not true in general even when S S is a group.
Jan Okniński, Mohan S. Putcha
openaire   +1 more source

Jordan homomorphisms and T‐ideals

open access: yesJournal of the London Mathematical Society, Volume 113, Issue 2, February 2026.
Abstract Let A$A$ and B$B$ be associative algebras over a field F$F$ with char(F)≠2${\rm char}(F)\ne 2$. Our first main result states that if A$A$ is unital and equal to its commutator ideal, then every Jordan epimorphism φ:A→B$\varphi:A\rightarrow B$ is the sum of a homomorphism and an antihomomorphism. Our second main result concerns (not necessarily
Matej Brešar, Efim Zelmanov
wiley   +1 more source

Cazenave‐Dickstein‐Weissler‐Type Extension of Fujita'S Problem on Heisenberg Groups

open access: yesMathematical Methods in the Applied Sciences, Volume 49, Issue 2, Page 499-511, 30 January 2026.
ABSTRACT This paper investigates the Fujita critical exponent for a heat equation with nonlinear memory posed on the Heisenberg groups. A sharp threshold is identified such that, for exponent values less than or equal to this critical value, no global solution exists, regardless of the choice of nonnegative initial data. Conversely, for exponent values
Mokhtar Kirane   +3 more
wiley   +1 more source

On the Recurrent C0-Semigroups, Their Existence, and Some Criteria

open access: yesJournal of Mathematics, 2021
In this paper, recurrent C0-semigroups are introduced and investigated. It is proved that, despite hypercyclic C0-semigroups, recurrent C0-semigroups can be found on finite-dimensional Banach spaces.
Mansooreh Moosapoor
doaj   +1 more source

Irreducible numerical semigroups with multiplicity three and four [PDF]

open access: yes, 2011
In this paper we analyze the irreducibility of numerical semigroups with multiplicity up to four. Our approach uses the notion of Kunz-coordinates vector of a numerical semigroup recently introduced in (Blanco-Puerto, 2011).
Blanco, Víctor
core  

Schrödinger Semigroups

open access: yes, 2007
Let H = \L + V be a general Schrödinger operator on R" (v~> 1), where A is the Laplace differential operator and V is a potential function on which we assume minimal hypotheses of growth and regularity, and in particular allow V which are unbounded below.
B. Simon
semanticscholar   +1 more source

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