Some remarks on global dimensions for cotorsion pairs
Some Remarks on Module Rigidity Over Local Rings.
Some remarks on preservation of topological products
Some Remarks on the Category Set(l), Part II
Some remarks on the subject of coherence
Some Remarks or v-Ideal Systems and Categories of semigroups
Some results on central extensions of crossed modules.
Some results on C-varieties
In an earlier paper, the second author generalized Eilenberg's variety theory by establishing a basic correspondence between certain classes of monoid morphisms and families of regular languages. We extend this theory in several directions. First, we prove a version of Reiterman's theorem concerning the definition of varieties by identities, and illustrate this result by describing the identities associated with languages of the form (a1a2...ak)+, where a1,...,ak are distinct letters. Next,...
Some results on -flat dimension of modules
In this paper, we study some properties of -flat -modules, where is a semidualizing module over a commutative ring and we investigate the relation between the -yoke with the -yoke of a module as well as the relation between the -flat resolution and the flat resolution of a module over -closed rings. We also obtain a criterion for computing the -flat dimension of modules.
Some results on homotopy theory of modules
Seguendo le idee presentate nei lavori [1] e [2] si studiano le proprietà dei gruppi di -omotopia per moduli ed omomorfismi di moduli.
Some results on the extension of analytic entities defined out of a compact
Some results on -varieties
In an earlier paper, the second author generalized Eilenberg’s variety theory by establishing a basic correspondence between certain classes of monoid morphisms and families of regular languages. We extend this theory in several directions. First, we prove a version of Reiterman’s theorem concerning the definition of varieties by identities, and illustrate this result by describing the identities associated with languages of the form , where are distinct letters. Next, we generalize the notions...
Sous-catégories pleines d'une catégorie dérivée filtrée
Sous-catégories réflexives et la théorie générale des radicaux
Sous-catégories semi-pleines maximales d'une catégorie
Sous-groupes fonctoriels et relativisations
Sous-quotients et relations induites dans les catégories exactes
Space structures, their theory and application. II.
Spaced spaces
Spaces and equations
It is proved, for various spaces A, such as a surface of genus 2, a figure-eight, or a sphere of dimension ≠ 1,3,7, and for any set Σ of equations, that Σ cannot be modeled by continuous operations on A unless Σ is undemanding (a form of triviality that is defined in the paper).