Cohomologies et extensions de catégories.
Georges Hoff (1994)
Mathematica Scandinavica
Paoli, Simona (2003)
Homology, Homotopy and Applications
Zimmermann, Alexander (2000)
AMA. Algebra Montpellier Announcements [electronic only]
Cegarra, A.M., García-Calcines , J.M., Ortega, J.A. (2002)
Homology, Homotopy and Applications
Yau, Donald (2006)
International Journal of Mathematics and Mathematical Sciences
Willi Meier, Martin Huber (1978)
Commentarii mathematici Helvetici
Dominique Bourn, Diana Rodelo (2007)
Cahiers de Topologie et Géométrie Différentielle Catégoriques
Martin Arkowitz, Marek Golasiński (1994)
Fundamenta Mathematicae
Let G be a finite group, the category of canonical orbits of G and b a contravariant functor to the category of abelian groups. We investigate the set of G-homotopy classes of comultiplications of a Moore G-space of type (A,n) where n ≥ 2 and prove that if such a Moore G-space X is a cogroup, then it has a unique comultiplication if dim X < 2n - 1. If dim X = 2n-1, then the set of comultiplications of X is in one-one correspondence with . Then the case leads to an example of infinitely...
David Blanc (1996)
Cahiers de Topologie et Géométrie Différentielle Catégoriques
Grandis, Marco (2007)
Theory and Applications of Categories [electronic only]
M. M. Kapranov, V. A. Voevodsky (1991)
Cahiers de Topologie et Géométrie Différentielle Catégoriques
Najar, Rudolph M. (1979)
Portugaliae mathematica
Shulman, Michael (2011)
The New York Journal of Mathematics [electronic only]
Franjou, Vincent, Pirashvili, Teimuraz (2004)
Documenta Mathematica
Künzer, Matthias (2008)
Documenta Mathematica
David J. Benson, Jon F. Carlson (1987)
Mathematische Zeitschrift
Marek Golasiński (1997)
Colloquium Mathematicae
The aim of this paper is to present a starting point for proving existence of injective minimal models (cf. [8]) for some systems of complete differential graded algebras.
Brown, Ronald, Wensley, Christopher D. (1996)
Theory and Applications of Categories [electronic only]
Carlos Ruiz Salguero, Roberto Ruis S. (1981)
Revista colombiana de matematicas
Daniel Simson, Andrzej Tyc (1974)