Results 131 to 140 of about 402 (157)
Some of the next articles are maybe not open access.
Injectivity of $$S$$ S -posets with respect to down closed regular monomorphisms
Semigroup Forum, 2015Let \(S\) be a pomonoid. An embedding \(f\colon A\to B\) of \(S\)-pomonoids is called \textit{down closed} if \(f(A)\) is a down closed \(S\)-poset of \(B\). An \(S\)-poset \(A\) is called \textit{down closed regular injective} or \textit{dc-injective} if it is injective with respect to down closed embeddings. \(A\) is called \textit{poideal injective}
Shahbaz, Leila, Mahmoudi, Mojgan
openaire +1 more source
On the homological classification of pomonoids by properties of cyclic S-posets
Semigroup Forum, 2013Between different so-called flatness properties of \(S\)-posets there is a property \((P_w)\) that is studied here. The author characterizes pomonoids from a subclass of completely simple semigroups with adjoined identity, all of whose cyclic (Rees factor) \(S\)-posets satisfy \((P_w)\).
openaire +2 more sources
Rees short exact sequences of \(S\)-posets
2017Summary: In this paper the notion of Rees short exact sequence for \(S\)-posets is introduced, and we investigate the conditions for which these sequences are left or right split. Unlike the case for \(S\)-acts, being right split does not imply left split.
openaire +1 more source
The index of Lie poset algebras
Journal of Combinatorial Theory - Series A, 2021Nicholas Mayers, Vincent Coll
exaly
Groups of linear isometries on poset structures
Discrete Mathematics, 2008Marcelo Firer +2 more
exaly
Urban deprivation in Argentina: A POSET analysis
Papers in Regional Science, 2020Enrico Ivaldi +2 more
exaly
Congruence B -orbits and the Bruhat poset of involutions of the symmetric group
Discrete Mathematics, 2012Yonah Cherniavsky
exaly