Results 51 to 60 of about 532 (202)
On the automorphisms of the power semigroups of a numerical semigroup
Transactions of the London Mathematical Society, Volume 13, Issue 1, December 2026.Abstract If H$H$ is a numerical semigroup (i.e., a cofinite subset of the non‐negative integers closed under addition), then the collection of all non‐empty subsets of H$H$ forms a semigroup P(H)$\mathcal {P}(H)$ under the sumset operation induced by addition in H$H$.
Salvatore Tringali, Kerou Wen
wiley +1 more source
Weak implicative filters in quasi-ordered residuated systems
, 2021 The concept of residuated relational systems ordered under a quasiorder relation was introduced in 2018 by S. Bonzio and I. Chajda as a structure A = 〈A, ·,→, 1, R〉, where (A, ·) is a commutative monoid with the identity 1 as the top element in this ...
Romano, Daniel
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Oppenheim–Schur inequalities for causal products
Bulletin of the London Mathematical Society, Volume 58, Issue 6, June 2026.Abstract We establish a class of Oppenheim–Schur‐type inequalities for the convolutional Jury product of positive semidefinite matrices. These results extend the classical Schur and Oppenheim inequalities associated with the Hadamard product to a causal convolutional setting.
Dominique Guillot +2 more
wiley +1 more source
Subpullbacks and Po-flatness Properties of S-posets [PDF]
Journal of Sciences, Islamic Republic of Iran, 2014 In (Golchin A. and Rezaei P., Subpullbacks and flatness properties of S-posets. Comm. Algebra. 37: 1995-2007 (2009)) study was initiated of flatness properties of right -posets over a pomonoid that can be described by surjectivity of corresponding to ...
A. Golchin, L. Nouri
doaj
The Class of Representable Semilattice-Ordered Monoids Is Not a Variety [PDF]
, 2021 We show a necessary and a sufficient condition for a quasivariety to be a variety. Using this, we show that the quasivariety of representable relation algebras over the signature \((\cdot , \cap , 1)\) is not avariety.
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Representable semilattice-ordered monoids [PDF]
Algebra universalis, 2007 We show that no finite set of first-order axioms can define the class of representable semilattice-ordered monoids.
Robin Hirsch, Szabolcs Mikulás
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Infinity‐operadic foundations for embedding calculus
Journal of Topology, Volume 19, Issue 2, June 2026.Abstract Motivated by applications to spaces of embeddings and automorphisms of manifolds, we consider a tower of ∞$\infty$‐categories of truncated right modules over a unital ∞$\infty$‐operad O$\mathcal {O}$. We study monoidality and naturality properties of this tower, identify its layers, describe the difference between the towers as O$\mathcal {O}$
Manuel Krannich, Alexander Kupers
wiley +1 more source
Quasi-Armendariz rings relative to a monoid
, 2007 For a monoid M, we introduce M-quasi-Armendariz rings which are a generalization of quasi-Armendariz rings, and investigate their properties. The M-quasi-Armendariz condition is a Morita invariant property. The class of M-quasi-Armendariz rings is closed
Hashemi, Ebrahim
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SUATU KAJIAN TENTANG SOFT SET TERURUT LATTICE (LATTICE ORDERED SOFT SET)
Jurnal Matematika UNANDTeori soft set pertama kali diperkenalkan oleh Molodsov sebagai suatu metode untuk menangani ketidakpastian. Metode ini mengkaji mengenai pengelompokan objek-objek yang memenuhi atau tidak memenuhi suatu parameter tertentu.
Witri Andika +2 more
doaj +1 more source
Bruhat-Chevalley Order in Reductive Monoids [PDF]
Journal of Algebraic Combinatorics, 2004 Let \(M\) be an irreducible algebraic monoid with zero. \(M\) is a reductive monoid if it is the Zariski closure in \(M_n(K)\) of a reductive group \(G\subseteq\text{GL}_n(K)\). The Bruhat-Chevalley order in \(G\) has a natural extension to \(M\). The Renner monoid \(R\) for \(M\) takes the place of the Weyl group \(W\) for \(G\).
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