Results 71 to 80 of about 1,225 (183)

Minimal conditions on Clifford semigroup congruences

open access: yesInternational Journal of Mathematics and Mathematical Sciences, 2006
A known result in groups concerning the inheritance of minimal conditions on normal subgroups by subgroups with finite indexes is extended to semilattices of groups [E(S),Se,ϕe,f] with identities in which all ϕe,f are epimorphisms (called q partial ...
M. El-Ghali M. Abdallah   +2 more
doaj   +1 more source

A note on operations of hesitant fuzzy sets [PDF]

open access: yesInternational Journal of Computational Intelligence Systems, 2015
In this paper, properties of operations and algebraic structures of hesitant fuzzy sets are investigated. Semilattices of hesitant fuzzy sets with union and intersection are discussed, respectively.
Zheng Pei, Liangzhong Yi
doaj   +1 more source

Periodic Orbits of MAX and MIN Multistate Networks

open access: yesMathematical Methods in the Applied Sciences, Volume 48, Issue 12, Page 11620-11629, August 2025.
ABSTRACT This work presents a generalization of Boolean networks to multistate networks over a complement‐closed set 𝒞, which can be finite or infinite. Specifically, we focus on MAX (and MIN) multistate networks, whose dynamics are governed by global arbitrary 𝒞‐maxterm (or 𝒞‐minterm) functions, which extend the well‐known maxterm (or minterm) Boolean
Juan A. Aledo   +3 more
wiley   +1 more source

Incomparably continuable sets of semilattices [PDF]

open access: yes, 2000
summary:A finite set of finite semilattices is said to be incomparably continuable if it can be extended to an infinite set of pairwise incomparable (with respect to embeddability) finite semilattices.
Ježek, Jaroslav, Slavík, Václav
core   +1 more source

Equational characterizations for some subclasses of domains

open access: yesOpen Mathematics
It is well known that the continuity of a poset can be seen as a special distributivity. There is an open problem: is there an equational characterization for continuous semilattices?
Feng Fan, Li Xiangrui
doaj   +1 more source

Sequences suffice for pointfree uniform completions

open access: yesJournal of the London Mathematical Society, Volume 112, Issue 2, August 2025.
Abstract Completions of metric spaces are usually constructed using Cauchy sequences. However, this does not work for general uniform spaces, where Cauchy filters or nets must be used instead. The situation in pointfree topology is more straightforward: the correct completion of uniform locales can indeed be obtained as a quotient of a locale of Cauchy 
Graham Manuell
wiley   +1 more source

Endomorphism monoids of semilattices of semigroups

open access: yesНауковий вісник Ужгородського університету. Серія: Математика і інформатика, 2017
We prove that the endomorphism monoid of a semilattice of semigroups, which are semilattice indecomposable, is isomorphically embedded into the wreath product of a transformation semigroup with a small category.
Ю. В. Жучок
doaj   +1 more source

On the Semantics and the Ontology of the Mass‐Count Distinction

open access: yesPhilosophy Compass, Volume 20, Issue 3, March 2025.
ABSTRACT The mass‐count distinction is a morpho‐syntactic distinction among nouns in English and many other languages. Tree, chair, person, group, and portion are count nouns, which come with the plural and accept numerals such as one and first; water, rice, furniture, silverware, and law enforcement are mass nouns, which lack the plural and do not ...
Friederike Moltmann
wiley   +1 more source

Representation of right zero semigroups and their semilattices by a transformation semigroup

open access: yesИзвестия высших учебных заведений. Поволжский регион: Физико-математические науки, 2022
Background. As is known, an arbitrary semigroup can be represented by a semigroup of transformations that are right shifts either in this semigroup itself or in the extended semigroup obtained from the original one by adding an outer unit. The problems
L.V. Zyablitseva   +2 more
doaj   +1 more source

Partial categorification of Hopf algebras and representation theory of towers of \mathcalJ-trivial monoids [PDF]

open access: yesDiscrete Mathematics & Theoretical Computer Science, 2014
This paper considers the representation theory of towers of algebras of $\mathcal{J} -trivial$ monoids. Using a very general lemma on induction, we derive a combinatorial description of the algebra and coalgebra structure on the Grothendieck rings $G_0 ...
Aladin Virmaux
doaj   +1 more source

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