Results 111 to 120 of about 84,954 (299)
Three-operator Problems in Banach Spaces
Extracta Mathematicae, 2018 We study the analogue of 3-space problems for classes of operators acting on Banach spaces. We show examples of classes of operators having or failing the 3-operator property, and give several methods to obtain classes with this property.
Jesús M.F. Castillo +2 more
doaj
, 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.
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On the Betti numbers of some semigroup rings [PDF]
arXiv, 2011 For any numerical semigroup $S$, there are infinitely many numerical symmetric semigroups $T$ such that $S=\frac{T}{2}$ is their half. We are studying the Betti numbers of the numerical semigroup ring $K[T]$ when $S$ is a 3-generated numerical semigroup or telescopic.
arxiv
Representation functions of additive bases for abelian semigroups
International Journal of Mathematics and Mathematical Sciences, 2004 A subset of an abelian semigroup is called an asymptotic basis for the semigroup if every element of the semigroup with at most finitely many exceptions can be represented as the sum of two distinct elements of the basis.
Melvyn B. Nathanson
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arXiv, 2015 The paper begins by exploring the various definitions of norms on semigroups and then presents a new definition of a normed semigroup. The properties of normed semigroups in the new sense are investigated. The new definition of the norm is used to establish a general result on topological regular semigroups which is then used to prove the surprising ...
arxiv
One-Parameter Semigroups in a Semigroup [PDF]
Transactions of the American Mathematical Society, 1960 Paul S. Mostert, Allen Shields
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Bi-Interior Ideals of Semigroups
Discussiones Mathematicae - General Algebra and Applications, 2018 In this paper, as a further generalization of ideals, we introduce the notion of bi-interior ideal as a generalization of quasi ideal, bi-ideal and interior ideal of semigroup and study the properties of bi-interior ideals of semigroup, simple semigroup ...
Rao M. Murali Krishna
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Idempotent ordered semigroup [PDF]
arXiv, 2017 An element e of an ordered semigroup $(S,\cdot,\leq)$ is called an ordered idempotent if $e\leq e^2$. We call an ordered semigroup $S$ idempotent ordered semigroup if every element of $S$ is an ordered idempotent. Every idempotent semigroup is a complete semilattice of rectangular idempotent semigroups and in this way we arrive to many other important ...
arxiv
Remarks on Primitive Idempotents in Compact Semigroups with Zero [PDF]
, 1954 Robert J. Koch
openalex +1 more source