G Maps and the Projective Class Group
-monomorphisms
Gabriel filters in Grothendieck categories.
In [1] it is proved that one must take care trying to copy results from the case of modules to an arbitrary Grothendieck category in order to describe a hereditary torsion theory in terms of filters of a generator. By the other side, we usually have for a Grothendick category an infinite family of generators {Gi; i ∈ I} and, although each Gi has good properties the generator G = ⊕i ∈ I Gi is not easy to handle (for instance in categories like graded modules). In this paper the authors obtain a bijective...
GAGA for DQ-algebroids
Galois cohomology of biquadratic extensions.
Galois coverings, Morita equivalence and smash extensions of categories over a field.
Galois extensions as functors of comodules.
Galois H-objects with a normal basis in closed categories. A cohomological interpretation.
In this paper, for a cocommutative Hopf algebra H in a symmetric closed category C with basic object K, we get an isomorphism between the group of isomorphism classes of Galois H-objects with a normal basis and the second cohomology group H2(H,K) of H with coefficients in K. Using this result, we obtain a direct sum decomposition for the Brauer group of H-module Azumaya monoids with inner action:BMinn(C,H) ≅ B(C) ⊕ H2(H,K)In particular, if C is the symmetric closed category of C-modules with K a...
Galois theory and double central extensions.
Gamuts and cofibrations
Ganea term for CCG-homology of crossed modules.
In [2] an internal homology theory of crossed modules was defined (CCG-homology for short), which is very much related to the homology of the classifying spaces of crossed modules ([5]). The goal of this note is to construct a low-dimensional homology exact sequence corresponding to a central extension of crossed modules, which is quite similar to the one constructed in [3] for group homology.
Gaps and dualities in Heyting categories
We present an algebraic treatment of the correspondence of gaps and dualities in partial ordered classes induced by the morphism structures of certain categories which we call Heyting (such are for instance all cartesian closed categories, but there are other important examples). This allows to extend the results of [14] to a wide range of more general structures. Also, we introduce a notion of combined dualities and discuss the relation of their structure to that of the plain ones.
G-CW-Surgery and K...(ZG).
General associativity and general composition for double categories
General linear and functor cohomology over finite fields.
General symbols and presentations of elementary linear groups.
Generalization of the concept of variety and quasivariety to partial algebras through category theory [Book]
Generalized Adams completion
Generalized Brown representability in homotopy categories.
Generalized Brown representability in homotopy categories: erratum.