Andrej Portnov, Upražnenija s istoriej po ukrainski
نویسندگان
چکیده
منابع مشابه
Po-S-Dense Monomorphism
In this paper we take $mathcal A$ to be the category {bf Pos-S} of $S$-posets, for a posemigroup $S$, ${mathcal M}_{pd}$ to be the class of partially ordered sequantially-dense monomorphisms and study the categorical properties, such as limits and colimits, of this class. These properties are usually needed to study the homological notions, such as injectivity, of $S$-...
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In this paper, we first consider (po-)torsion free and principally weakly (po-)flat $S$-posets, specifically we discuss when (po-)torsion freeness implies principal weak (po-)flatness. Furthermore, we give a counterexample to show that Theorem 3.22 of Shi is incorrect. Thereby we present a correct version of this theorem. Finally, we characterize pomonoids over which all cyclic $S$-posets are ...
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ژورنال
عنوان ژورنال: Cahiers du monde russe
سال: 2010
ISSN: 1252-6576,1777-5388
DOI: 10.4000/monderusse.7443