Results 111 to 120 of about 108,334 (223)
, 1997 This chapter gives an overview on what is often called the algebraic theory of finite automata. It deals with languages, automata and semigroups, and has connections with model theory in logic, boolean circuits, symbolic dynamics and topology.
openaire +2 more sources
Portugaliae MathematicaRegular abelian semigroups are isomorphic to a direct product of an abelian group and a rectangular band (Warne, 1994). Seeking for a similar result for nilpotency, solvability, and supernilpotency of regular semigroups, we obtain that an analogous statement is true only in orthodox semigroups.
Jelena Radović, Nebojša Mudrinski
openaire +4 more sources
Spaces of Measures and their Applications to Structured Population Models, 2021 Y. E. Gantouh +3 more
semanticscholar +1 more source
Journal of the Australian Mathematical Society, 1972 The cancellation law is a necessary condition for a semigroup to be embedded in a group. In general, this condition is not sufficient; necessary and sufficient conditions are rather complicated (see [1]). It is, therefore, of interest to find large classes of semigroups for which the cancellation law is sufficient to ensure embeddability in a group.
openaire +1 more source
On Regularized Quasi-Semigroups and Evolution Equations
Abstract and Applied Analysis, 2010 We introduce the notion of regularized quasi-semigroup of bounded linear operators on Banach spaces and its infinitesimal generator, as a generalization of regularized semigroups of operators.
M. Janfada
doaj +1 more source
AIMS MathematicsIn this paper, we established a $ T1 $ criterion for the boundedness of Laguerre-Calderón-Zygmund operators on BMO$ _{L_{\alpha}}(0, \infty) $ associated with Laguerre operators $ L_\alpha(\alpha > -\frac{1}{2}) $.
Fan Chen +4 more
doaj +1 more source
Observations on Abelian sandpile models for directed graphs
Electronic Research ArchiveWe relate various characterizations of sandpile dynamics arising in the literature referred to as 'Abelian sandpile models', and we rigorously establish the sense in which they are commutative and associative as algebraic structures.
Amena Assem +2 more
doaj +1 more source
Derivations and KMS-Symmetric Quantum Markov Semigroups. [PDF]
Commun Math Phys, 2023 Vernooij M, Wirth M.
europepmc +1 more source
On almost (m, n)-ideals and fuzzy almost (m, n)-ideals in semigroups
Journal of Taibah University for Science, 2019 In this paper, we define almost $(m,n) $-ideals of semigroups by using the concepts of $(m,n) $-ideals and almost ideals of semigroups. An almost $(m,n) $-ideal is a generalization of $(m,n) $-ideals and a generalization of almost one-sided ideals.
Sudaporn Suebsung +2 more
doaj +1 more source
Journal of Algebra, 1998 For a positive integer \(n\), let \(\Sigma_n\) denote the alphabet consisting of letters \(x_0,x_1,\dots,x_{n-1}\). A triple \((\alpha,\beta,\gamma)\) of words over \(\Sigma_n\) is allowable if \(\alpha\) is a prefix of \(\beta\) and \(\gamma\) is a suffix of \(\beta\). Let \((\alpha,\beta,\gamma)\) and \((\alpha',\beta',\gamma')\) be allowable triples
openaire +1 more source