Results 71 to 80 of about 652,533 (244)

Semigroup C *-algebras

open access: yes, 2016
to appear as a chapter in the Book "K-Theory for Group C*-Algebras and Semigroup C*-Algebras" jointly authored with Joachim Cuntz, Siegfried Echterhoff and Guoliang ...
openaire   +2 more sources

Control of Open Quantum Systems via Dynamical Invariants

open access: yesAdvanced Quantum Technologies, Volume 9, Issue 2, February 2026.
Dynamical invariants are used to reverse‐engineer control fields for open quantum systems described by time‐dependent Lindblad master equations. By minimizing an analytic leakage functional, the protocol dynamically steers the state along an effectively decoherence‐free path without costly iterative propagation.
Loris M. Cangemi   +4 more
wiley   +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

Ternary Weighted Function and Beurling Ternary Banach Algebra l1ω(S)

open access: yesAbstract and Applied Analysis, 2011
Let S be a ternary semigroup. In this paper, we introduce our notation and prove some elementary properties of a ternary weight function ω on S. Also, we make ternary weighted algebra l1ω(S) and show that l1ω(S) is a ternary Banach algebra.
Mehdi Dehghanian   +1 more
doaj   +1 more source

Interior GE-Algebras

open access: yesJournal of Mathematics, 2021
The concepts of (commutative, transitive, left exchangeable, belligerent, antisymmetric) interior GE-algebras and bordered interior GE-algebras are introduced, and their relations and properties are investigated.
Jeong-Gon Lee   +3 more
doaj   +1 more source

Connes-amenability of bidual and weighted semigroup algebras

open access: yes, 2005
We investigate the notion of Connes-amenability for dual Banach algebras, as introduced by Runde, for bidual algebras and weighted semigroup algebras. We provide some simplifications to the notion of a $\sigma WC$-virtual diagonal, as introduced by Runde,
Daws, Matthew
core   +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

Quasilinear Stochastic Cauchy Problem in Abstract Colombeau Spaces

open access: yesInternational Journal of Mathematics and Mathematical Sciences, 2012
Generalized solutions to the abstract Cauchy problem for a quasilinear equation with the generator of an integrated semigroup and with terms reflecting nonlinear perturbations and white noise type perturbations are under consideration.
Irina V. Melnikova, Uljana A. Alekseeva
doaj   +1 more source

Auslander algebra for the semigroup of all transformations of the two elements set

open access: yesНауковий вісник Ужгородського університету. Серія: Математика і інформатика, 2017
It is described the Auslander algebra for the matrix representations of the semigroup of all transformations of the two elements set over a eld of any characteristic.
E. M. Костишин
doaj   +1 more source

Crossed product of a C*-algebra by a semigroup of endomorphisms generated by partial isometries

open access: yes, 2005
The paper presents a construction of the crossed product of a C*-algebra by a semigroup of endomorphisms generated by partial isometries.Comment: 22 ...
Kwasniewski, B. K., Lebedev, A. V.
core   +1 more source

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