Results 1 to 10 of about 53 (40)
On some varieties of ai-semirings satisfying xp+1 ≈ x
Open Mathematics, 2018 The aim of this paper is to study the lattice of subvarieties of the ai-semiring variety defined by the additional ...
Aifa Wang
exaly +2 more sources
Green’s Relations on Submonoids of Generalized Hypersubstitutions of Type (n)
Discussiones Mathematicae - General Algebra and Applications, 2021 A generalized hypersubstitution of type τ = (n) is a function which takes the n-ary operation symbol f to the term of the same type σ(f ) which does not necessarily preserve the arity. Let HypG(n) be the set of all these generalized hypersubstitutions of
Kunama Pornpimol, Leeratanavalee Sorasak
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All Linear-Solid Varieties of Semirings
Discussiones Mathematicae - General Algebra and Applications, 2019 A variety of semirings is said to be solid if each of its identities is satisfied as hyperidentity. There are precisely four solid varieties of semirings.
Hounnon Hippolyte, Denecke Klaus
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All Regular-Solid Varieties of Idempotent Semirings
Discussiones Mathematicae - General Algebra and Applications, 2017 The lattice of all regular-solid varieties of semirings splits in two complete sublattices: the sublattice of all idempotent regular-solid varieties of semirings and the sublattice of all normal regular-solid varieties of semirings.
Hounnon Hippolyte
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On the Complete Join of Permutative Combinatorial Rees–Sushkevich Varieties
, 2007 A semigroup variety is a Rees-Sushkevich variety if it is contained in a periodic variety generated by 0-simple semigroups. The collection of all permutative combinatorial Rees-Sushkevich varieties constitutes an incomplete lattice that does not contain ...
Edmond W. H. Lee
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All Maximal Completely Regular Submonoids of HypG(2)
Discussiones Mathematicae - General Algebra and Applications, 2017 In this paper we consider mappings σ which map the binary operation symbol f to the term σ (f) which do not necessarily preserve the arity. These mapping are called generalized hypersubstitutions of type τ = (2) and we denote the set of all these ...
Kunama Pornpimol, Leeratanavalee Sorasak
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LEFT-OUTERMOST EXTENSIONS OF SOME VARIETIES
, 2003 Let r : F —» N be a type of algebras F is a nonempty set of fundamental operation symbols and N is the set of all positive integers. An identity ip ~ ip of type T we call left-outermost if the left-outermost variables in N where F is a nonempty set of ...
J. Płonka
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The Clone of K*(n, r)-Full Terms
Discussiones Mathematicae - General Algebra and Applications, 2019 Let τn be a type of algebras in which all operation symbols have arity n, for a fixed n ≥ 1. For 0 < r ≤ n, this paper introduces a special kind of n-ary terms of type τn called K*(n, r)-full terms. The set of all K*(n, r)-full terms of type τn is closed
Wattanatripop Khwancheewa +1 more
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Absolute Retracts as Reduced Products
, 2004 We show that in finitely generated congruence distributive varieties every absolute retract is a product of reduced powers of maximal subdirectly irreducibles.
Jenner, M +3 more
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V-TRANSFORMATION OF STRONG VARIETIES OF PARTIAL ALGEBRAS
, 2014 S. Busaman
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