Results 21 to 30 of about 567 (96)
Algebraic entropies of commuting endomorphisms of torsion abelian groups
, 2020 For actions of m commuting endomorphisms of a torsion abelian group we compute the algebraic entropy and the algebraic receptive entropy, showing that the latter one takes finite positive values in many cases when the former one vanishes.
A. Biś +3 more
semanticscholar +1 more source
The transitivity of primary conjugacy in regular ω-semigroups
Open Mathematics, 2022 The conjugacy relation plays an important role in group theory and the conjugacy relation of groups has been generalized to semigroups in various methods by several authors.
Liu Xin, Wang Shoufeng
doaj +1 more source
Holography in 7D Randall-Sundrum cosmology [PDF]
, 2007 We define the 7D Randall-Sundrum (RS) background and construct the corresponding 6D theory via AdS/CFT duality. In simple approximations, the Friedmann equation derived from 7D RS cosmology and the brane view-point results exactly match.
Bianchi +10 more
core +3 more sources
Remarks on the paper "M. Kolibiar, On a construction of semigroups" [PDF]
, 2015 In his paper "On a construction of semigroups", M. Kolibiar gives a construction for a semigroup $T$ (beginning from a semigroup $S$) which is said to be derived from the semigroup $S$ by a $\theta$-construction.
Nagy, Attila
core +2 more sources
HOMOGENEOUS COMPLETELY SIMPLE SEMIGROUPS
Mathematika, Volume 66, Issue 3, Page 733-751, July 2020., 2020 Abstract A semigroup is completely simple if it has no proper ideals and contains a primitive idempotent. We say that a completely simple semigroup S is a homogeneous completely simple semigroup if any isomorphism between finitely generated completely simple sub‐semigroups of S extends to an automorphism of S.
Thomas Quinn‐Gregson
wiley +1 more source
Monoids over which all weakly flat acts are flat [PDF]
, 1990 If R is a ring with identity and M is a left R-module then it is well known that the following statements are equivalent: (1) M is flat. (2) The functor—⊗ M preserves embeddings of right ideals into R.
Bulman-Fleming, Sydney +1 more
core +2 more sources
A characterization of translational hulls of a strongly right type B semigroup
Open Mathematics, 2019 The aim of this paper is to study the translational hull of a strongly right type B semigroup. Our main result is to prove that the translational hull of a strongly right type B semigroup is itself a strongly right type B semigroup. As an application, we
Li Chunhua, Xu Baogen
doaj +1 more source
On pomonoid of partial transformations of a poset
Open Mathematics, 2023 The main objective of this article is to study the ordered partial transformations PO(X){\mathcal{PO}}\left(X) of a poset XX. The findings show that the set of all partial transformations of a poset with a pointwise order is not necessarily a pomonoid ...
Al Subaiei Bana
doaj +1 more source
Semigroup Algebras, 1999 A complete structural characterization of submonoids S of a polycyclic‐by‐finite group such that the semigroup algebra K[S] over a field K is right noetherian is obtained. It follows that such algebras are also left noetherian.
E. Jespers, J. Okniński
semanticscholar +1 more source
Finite groups are big as semigroups [PDF]
, 2011 We prove that a finite group G occurs as a maximal proper subsemigroup of an infinite semigroup (in the terminology of Freese, Ježek, and Nation, G is a big semigroup) if and only if |G| ≥ 3.
Dolinka, Igor, Ruskuc, Nik
core +2 more sources