Results 11 to 20 of about 108,334 (223)
Israel Journal of Mathematics, 2022 47 pages.
Hazrat, Roozbeh (R16959) +1 more
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User’s guide to the fractional Laplacian and the method of semigroups [PDF]
Fractional Differential Equations, 2018 The \textit{method of semigroups} is a unifying, widely applicable, general technique to formulate and analyze fundamental aspects of fractional powers of operators $L$ and their regularity properties in related functional spaces.
P. R. Stinga
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Upper Envelopes of Families of Feller Semigroups and Viscosity Solutions to a Class of Nonlinear Cauchy Problems [PDF]
SIAM Journal of Control and Optimization, 2019 In this paper we construct the smallest semigroup $\mathscr{S}$ that dominates a given family of linear Feller semigroups. The semigroup $\mathscr{S}$ will be referred to as the semigroup envelope or Nisio semigroup.
M. Nendel, M. Röckner
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Ergodic Behavior of Non-conservative Semigroups via Generalized Doeblin’s Conditions [PDF]
Acta Applicandae Mathematicae - An International Survey Journal on Applying Mathematics and Mathematical Applications, 2017 We provide quantitative estimates in total variation distance for positive semigroups, which can be non-conservative and non-homogeneous. The techniques relies on a family of conservative semigroups that describes a typical particle and Doeblin’s type ...
Vincent Bansaye +2 more
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C*-algebras of stable rank one and their Cuntz semigroups [PDF]
Duke mathematical journal, 2018 The uncovering of new structure on the Cuntz semigroup of a C*-algebra of stable rank one leads to several applications: We answer affirmatively, for the class of stable rank one C*-algebras, a conjecture by Blackadar and Handelman on dimension functions,
Ramon Antoine +3 more
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Counting Numerical Semigroups [PDF]
The American mathematical monthly, 2017 A numerical semigroup is an additive submonoid of the natural numbers with finite complement. The size of the complement is called the genus of the semigroup. How many numerical semigroups have genus equal to g? We outline Zhai's proof of a conjecture of
N. Kaplan
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Algebra and discrete mathematics, 2007 A semigroup S is called F- semigroup if there exists a group-congruence ?? on S such that every ??-class contains a greatest element with respect to the natural partial order ???S of S (see [8]). This generalizes the concept of F-inverse semigroups introduced by V. Wagner [12] and investigated in [7].
Giraldes, E. +2 more
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FUZZY SEMIGROUPS IN REDUCTIVE SEMIGROUPS [PDF]
Korean Journal of Mathematics, 2013 Summary: We consider a fuzzy semigroup \(S\) in a right (or left) reductive semigroup \(X\) such that \(S(k)=1\) for some \(k \in X\) and find a faithful representation (or anti-representation) of \(S\) by transformations of \(S\). Also we show that a fuzzy semigroup \(S\) in a weakly reductive semigroup \(X\) such that \(S(k)=1\) for some \(k \in X ...
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Introducing Fully Up-Semigroups [PDF]
, 2018 In this paper, we introduce some new classes of algebras related to UP-algebras and semigroups, called a left UP-semigroup, a right UP-semigroup, a fully UP-semigroup, a left-left UP-semigroup, a right-left UP-semigroup, a left-right UP-semigroup, a ...
Aiyared Iampan
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Proceedings of the American Mathematical Society, 1972 The main purpose of this paper is to describe some properties of categorical semigroups, commutative semigroups which are categorical at zero, and determine the structure of commutative categorical semigroups. We also investigate whether Petrich’s tree condition, for categorical semigroups which are completely semisimple inverse semigroups, is ...
McMorris, F. R., Satyanarayana, M.
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