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pro vyhledávání: '"Alvin Lepik"'
Autor:
Valdis Laan, Alvin Lepik
Publikováno v:
Proceedings of the Edinburgh Mathematical Society. :1-29
We call a semigroup right perfect if every object in the category of unitary right acts over that semigroup has a projective cover. In this paper, we generalize results about right perfect monoids to the case of semigroups. In our main theorem, we wi
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::fd7cf56afb35b3b74f1a68852f9becf3
https://doi.org/10.1017/s0013091523000159
https://doi.org/10.1017/s0013091523000159
Autor:
Alvin Lepik
Publikováno v:
Periodica Mathematica Hungarica. 85:171-176
We consider semigroups strongly Morita equivalent to a fixed monoid. We prove that such semigroups are precisely the enlargements of that monoid. We also show that enlargements of a given group are precisely the Rees matrix semigroups over that group
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::4d648e5f6a02a954c5cf9e106ed70694
https://doi.org/10.1007/s10998-021-00427-5
https://doi.org/10.1007/s10998-021-00427-5