Semilattice sums of algebras and Mal’tsev products of varieties
نویسندگان
چکیده
منابع مشابه
Localizations of Maltsev Varieties
We give an abstract characterization of categories which are localizations of Maltsev varieties. These results can be applied to characterize localizations of naturally Maltsev varieties.
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An interoal algebra is an interval 段。m zero to some posítive e1ement in a partial1y order哩d Abelian group, whích, under the restrictíon of the 草roup op苦ratíon to the in terval, ís a p在rtiaI algebra. In this paper we study int母rva1 algebras from a categorical point of vi仰. and show that Cart栩栩 products and 加rizontal sums are 牵贺喜ctíve a毒 categoríca1 products and ∞products,阳pec tively. We show th...
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Maltsev families of varieties which are closed under join or Maltsev product are investigated. New Maltsev conditions for congruence semi-distributivity are given.
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chapters 1 and 2 establish the basic theory of amenability of topological groups and amenability of banach algebras. also we prove that. if g is a topological group, then r (wluc (g)) (resp. r (luc (g))) if and only if there exists a mean m on wluc (g) (resp. luc (g)) such that for every wluc (g) (resp. every luc (g)) and every element d of a dense subset d od g, m (r)m (f) holds. chapter 3 inv...
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ژورنال
عنوان ژورنال: Algebra universalis
سال: 2020
ISSN: 0002-5240,1420-8911
DOI: 10.1007/s00012-020-00656-8