Results 91 to 100 of about 10,642 (232)
The semigroup of nonempty finite subsets of integers
International Journal of Mathematics and Mathematical Sciences, 1986 Let Z be the additive group of integers and g the semigroup consisting of all nonempty finite subsets of Z with respect to the operation defined byA+B={a+b:a∈A, b∈B}, A,B∈g.For X∈g, define AX to be the basis of 〈X−min(X)〉 and BX the basis of 〈max(X ...
Reuben Spake
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The Fixed-Point Theory of Strictly Contracting Functions on Generalized Ultrametric Semilattices [PDF]
Electronic Proceedings in Theoretical Computer Science, 2013 We introduce a new class of abstract structures, which we call generalized ultrametric semilattices, and in which the meet operation of the semilattice coexists with a generalized distance function in a tightly coordinated way.
Eleftherios Matsikoudis, Edward A. Lee
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Routes to relevance: Philosophies of relevant logics
Philosophy Compass, Volume 19, Issue 2, February 2024.Abstract Relevant logics are a family of non‐classical logics characterized by the behavior of their implication connectives. Unlike some other non‐classical logics, such as intuitionistic logic, there are multiple philosophical views motivating relevant logics. Further, different views seem to motivate different logics. In this article, we survey five
Shawn Standefer
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On Closedness of Some Homotypical Varieties of Semigroups
Journal of Mathematics, Volume 2024, Issue 1, 2024.It is well known that every subvariety of the variety of semigroups need not be absolutely closed. Thus, identifying those subvarieties that are closed in themselves or in larger varieties is an interesting open problem in the theory of semigroup dominions.
Noor Alam +6 more
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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 +2 more
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Revisiting Semilattice Semantics
Outstanding Contributions to Logic, 2021 Shawn Standefer
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Assignment markets with the same core [PDF]
In the framework of bilateral assignment games, we study the set of matrices associated with assignment markets with the same core. We state conditions on matrix entries that ensure that the related assignment games have the same core.
Carles Rafels +2 more
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Semilattices on Peano Continua [PDF]
Proceedings of the American Mathematical Society, 1975 A continuum is cell-cyclic if every cyclic element is an n n -cell for some integer n n . It is shown that every cell-cyclic Peano continuum admits a topological semilattice.
openaire +1 more source
On the 75th birth anniversary of Marat Mirzaevich Arslanov
Учёные записки Казанского университета: Серия Физико-математические науки, 2019 The paper describes the biography and the main scientific achievements of Marat Mirzaevich Arslanov, the Head of the Department of Algebra and Mathematical Logic of Kazan Federal University, Professor, who is the founder of the Kazan School of ...
I.Sh. Kalimullin, V.L. Selivanov
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A uniform refinement property for congruence lattices
, 2005 The Congruence Lattice Problem asks whether every algebraic distributive lattice is isomorphic to the congruence lattice of a lattice. It was hoped that a positive solution would follow from E. T. Schmidt's construction or from the approach of P. Pudlak,
Wehrung, Friedrich
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