Results 151 to 160 of about 467 (189)

A lattice structure for ancestral configurations arising from the relationship between gene trees and species trees. [PDF]

Discrete Appl Math
Lappo E, Rosenberg NA.
europepmc   +1 more source

Lorentzian bordisms in algebraic quantum field theory. [PDF]

Lett Math Phys
Bunk S, MacManus J, Schenkel A.
europepmc   +1 more source

On flatness properties of S-posets

, 2005
openaire   +1 more source

Some of the next articles are maybe not open access.

Related searches:

Projective S-Posets and Hom Functor

Algebra Colloquium, 2015
We prove for a unitary S-poset P that the functor hom (P,-) is exact if and only if P is isomorphic to eS for some idempotent e in S. We note that this result differs from the well-known result of exactness of the functor hom (P,-) in the category of modules.
Irannezhad, Setareh, Madanshekaf, Ali
openaire   +2 more sources

On injective hulls of $$S$$ S -posets

Semigroup Forum, 2014
The authors describe injectives in the category of \(S\)-posets with \(S\)-submultiplicative morphisms and construct injective hulls of \(S\)-posets with respect to a specific class \({\mathcal E}_{\leq}\) of morphisms. The main theorem reads as follows: For every \(S\)-poset \(A_S\), the quantal \({\mathcal Q}(A)_S\) is the \({\mathcal E}_{\leq ...
Zhang, Xia, Laan, Valdis
openaire   +2 more sources

On Conditions (P′) and (Pw′) for S-posets

Journal of Algebra and Its Applications, 2023
Partially ordered monoids (or pomonoids) [Formula: see text] acting on a partially ordered set (or poset), briefly [Formula: see text]-posets, appear naturally in the study of mappings between posets, and play an essential role in pomonoid theory. The study of flatness properties of [Formula: see text]-posets was initiated by Fakhruddin in the 1980s ...
Xingliang Liang, Yinan Chen, Roghaieh Khosravi   +2 more
openaire   +1 more source

Completion of S-posets

Semigroup Forum, 2012
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
openaire   +1 more source

The regular-injective envelope of $$S$$ S -posets

Semigroup Forum, 2015
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Rasouli, H., Barzegar, H.
openaire   +1 more source

On a generalization of principal weak (po-)flatness of S-posets

Asian-European Journal of Mathematics, 2021
In [H. Rashidi, A. Golchin and H. Mohammadzadeh saany, On [Formula: see text]-flat acts, Categ. Gen. Algebr. Struct. Appl. 12(1) (2020) 175–197], the study of [Formula: see text]-flatness property of right acts [Formula: see text] over a monoid [Formula: see text] that can be described by means of when the functor [Formula: see text]-preserves some ...
Hamideh Rashidi, Akbar Golchin, Hossein Mohammadzadeh Saany   +2 more
openaire   +1 more source

On weakly pullback flat S-posets

Journal of Algebra and Its Applications
In 2005, Bulman-Fleming and Laan established an analog of the Lazard–Govorov–Stenström theorem in the convex of [Formula: see text]-posets, which shows that an [Formula: see text]-poset [Formula: see text] is strongly flat if and only if [Formula: see text]-preserves subpullbacks and subequalizers if and only if [Formula: see text] satisfies condition
Tingting Zhao, Husheng Qiao, Xia Zhang
openaire   +1 more source