Results 91 to 100 of about 58,101 (201)
, 2012 In this thesis we consider in detail the following two fundamental problems for semigroup presentations: 1. Given a semigroup find a presentation defining it. 2. Given a presentation describe the semigroup defined by it.
Ruškuc, Nik
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Common fixed point theorems for left reversible and near-commutative semigroups and applications
Journal of Inequalities and Applications, 2005 We prove some common fixed point theorems for left reversible and near-commutative semigroups in compact and complete metric spaces, respectively.
Kang Shin Min, Liu Zeqing
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On a Functional Equation Associated with (a,k)-Regularized Resolvent Families
Abstract and Applied Analysis, 2012 Let a∈Lloc1(ℝ+) and k∈C(ℝ+) be given. In this paper, we study the functional equation R(s)(a*R)(t)-(a*R)(s)R(t)=k(s)(a*R)(t)-k(t)(a*R)(s), for bounded operator valued functions R(t) defined on the positive real line ℝ+.
Carlos Lizama, Felipe Poblete
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Penentuan Hiperstruktur Aljabar dan Karakteristiknya dalam Masalah Pewarisan Biologi
Jambura Journal of MathematicsThis article discusses the application of mathematics in biological inheritance problems, which are closely linked to mathematical studies, particularly in algebraic hyperstructures, including hypergroupoids, hypergroups, and -semigroups.
Alifa Raida Alamsyah +2 more
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Non-commutative Grillet semigroups
, 2014 Grillet semigroups are introduced. This class of semigroups contains regular semigroups and complete commutative semigroups (by Grillet’s terminology).
Novikov, B.V.
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Derivations and KMS-Symmetric Quantum Markov Semigroups. [PDF]
Commun Math Phys, 2023 Vernooij M, Wirth M.
europepmc +1 more source
On Weakly Commutative Ordered Semigroups
Semigroup Forum, 1998 A partially ordered semigroup \((S, \cdot, \leq)\) is ``weakly commutative'' if for all \(a,b \in S\) there exist \(x\in S\) and a nonnegative integer \(n\) such that \((ab)^n \leq bxa\). It is ``archimedean'' if for all \(a,b\in S\) there exist \(x,y\in S\) and \(m\) such that \(a^m\leq xby\). It was shown by \textit{N.
Kehayopulu, N, Tsingelis, M
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Feller semigroups, Lp-sub-Markovian semigroups, and applications to pseudo-differential operators with negative definite symbols [PDF]
, 2001 The question of extending L-p-sub-Markovian semigroups to the spaces L-q, q > P, and the interpolation of LP-sub-Markovian semigroups with Feller semigroups is investigated.
Farkas, Walter +4 more
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A Kallman-Rota Inequality for Evolution Semigroups [PDF]
, 2002 A Kallman-Rota type inequality for evolution semigroups and applications for real valued functions are ...
Dragomir, Sever S, Buşe, Constantin
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Smarandache Soft Semigroups and their Properties
Journal of New Theory, 2015 – In this paper, the notions of smarandache soft semigroups (SS-semigroups) introduced for the first time. An SS-semigroup ( , ) is basically a parameterized collection of subsemigroups which has F A is basically a parameterized collection of ...
Mumtaz Ali
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