can be strongly embedded into category of semigroups
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Jiří Sichler (1968)
Commentationes Mathematicae Universitatis Carolinae
Andrzej Walendziak (1993)
Archivum Mathematicum
In this paper we introduce the concept of an -representation of an algebra which is a common generalization of subdirect, full subdirect and weak direct representation of . Here we characterize such representations in terms of congruence relations.
Andrzej Walendziak (1998)
Mathematica Slovaca
Jaiung Jun, Kalina Mincheva, Louis Rowen (2022)
Kybernetika
We develop a general axiomatic theory of algebraic pairs, which simultaneously generalizes several algebraic structures, in order to bypass negation as much as feasible. We investigate several classical theorems and notions in this setting including fractions, integral extensions, and Hilbert's Nullstellensatz. Finally, we study a notion of growth in this context.
Chajda, I., Radeleczki, S. (2003)
Acta Mathematica Universitatis Comenianae. New Series
Ivan Chajda, W. Cheng, S. L. Wismath (2008)
Czechoslovak Mathematical Journal
Let be a type of algebras. A valuation of terms of type is a function assigning to each term of type a value . For , an identity of type is said to be -normal (with respect to valuation ) if either or both and have value . Taking with respect to the usual depth valuation of terms gives the well-known property of normality of identities. A variety is called -normal (with respect to the valuation ) if all its identities are -normal. For any variety , there is a least...
Karel Drbohlav (1965)
Commentationes Mathematicae Universitatis Carolinae
Peter Burmeister, Bolesław Wojdyło (1989)
Colloquium Mathematicae
Kazimierz Głazek (1997)
Acta Universitatis Palackianae Olomucensis. Facultas Rerum Naturalium. Mathematica
Radim Bělohlávek (2000)
Mathematica Slovaca
Ivan Chajda (1979)
Archivum Mathematicum
Horst Herrlich (1971)
Manuscripta mathematica
J. Dudek (1993)
Colloquium Mathematicae
František Šik (1981)
Czechoslovak Mathematical Journal
Sheremet, M.S. (2004)
Sibirskie Ehlektronnye Matematicheskie Izvestiya [electronic only]
Reinhard Pöschel, Klaus Denecke (1988)
Semigroup forum
Hartmut Höft (1973)
Colloquium Mathematicae
G.M.S. Gomes (1993)
Semigroup forum
Ivan Chajda, Bohdan Zelinka (1987)
Czechoslovak Mathematical Journal
M.I. Klun (1975)
Semigroup forum
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