Results 81 to 90 of about 108,334 (223)

On 𝓠-regular semigroups

Open Mathematics, 2018
In this paper, we give some characterizations of 𝓠-regular semigroups and show that the class of 𝓠-regular semigroups is closed under the direct product and homomorphic images.
Feng Xinyang
doaj   +1 more source

Quantum Carnot Bound from Petz Recovery Maps

Advanced Physics Research, Volume 5, Issue 2, February 2026.
A quantum bound (ηP$\eta_P$, the Petz Limit) is derived for the efficiency (η$\eta$) of a heat engine utilizing two‐level quantum systems (qubits) as the working substance. This limit, based on Petz recovery maps, is stricter than the classical Carnot limit (ηC$\eta_C$) for irreversible cycles.
Douglas Mundarain, Kevin Araya‐Sossa, Mario Miranda‐Rojas   +2 more
wiley   +1 more source

Truncated Bresse-Timoshenko beam with fractional Laplacian damping [PDF]

Contributions to Mathematics, 2023
Luiz Gutemberg Rosário Miranda, Carlos Alberto Raposo, Sebastião Martins Siqueira Cordeiro   +2 more
doaj   +1 more source

Binomial Semigroups

Journal of Algebra, 1998
A binomial semigroup is a semigroup with a finite set \(x_1,\dots,x_n\) of generators subject to \(\frac{n(n-1)}2\) relations of the type \(x_jx_i=x_kx_l\) with \(j>i ...
Jespers, Eric, Okninski, J.
openaire   +2 more sources

Efficient Dynamics: Reduced‐Order Modeling of the Time‐Dependent Schrödinger Equation

Advanced Physics Research, Volume 5, Issue 2, February 2026.
Reduced‐order modeling (ROM) approaches for the time‐dependent Schrödinger equation are investigated, highlighting their ability to simulate quantum dynamics efficiently. Proper Orthogonal Decomposition, Dynamic Mode Decomposition, and Reduced Basis Methods are compared across canonical systems and extended to higher dimensions.
Kolade M. Owolabi
wiley   +1 more source

𝒩-Fuzzy Ideals in Ordered Semigroups

International Journal of Mathematics and Mathematical Sciences, 2009
We introduce the concept of 𝒩-fuzzy left (right) ideals in ordered semigroups and characterize ordered semigroups in terms of 𝒩-fuzzy left (right) ideals. We characterize left regular (right regular) and left simple (right simple) ordered
Asghar Khan, Young Bae Jun, Muhammad Shabir   +2 more
doaj   +1 more source

Generalized perfect numerical semigroups [PDF]

Notes on Number Theory and Discrete Mathematics
In this work, we study the isolated gaps for generalized numerical semigroups, intro- duce generalized perfect numerical semigroups, and exemplify these semigroups.
Mohammad Zmmo, Nesrin Tutaş
doaj   +1 more source

Control of Open Quantum Systems via Dynamical Invariants

Advanced 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, Hilario Espinós, Ricardo Puebla, Erik Torrontegui, Amikam Levy   +4 more
wiley   +1 more source

On bi-Γ-ideals in Γ-semigroups [PDF]

Songklanakarin Journal of Science and Technology (SJST), 2007
In 1952, R. A. Good and D. R. Hughes introduced the notion of bi-ideals of semigroups and in 1981, the concept of Γ-semigroups was introduced by M. K. Sen. We have known that Γ-semigroups are a generalizationof semigroups. In this research, the notion of
Ronnason Chinram, Chutiporn Jirojkul
doaj  

Supermixing and hypermixing of strongly continuous semigroups and their direct sum

Journal of Taibah University for Science, 2021
Supermixing and hypermixing strongly continuous semigroups are introduced in this paper. It is proved that supermixing preserves under quasiconjugacy. Moreover, it is established that if a strongly continuous semigroup is supermixing(hypermixing), then ...
Mansooreh Moosapoor
doaj   +1 more source