Homotopy over and under
K. A. Hardie, K. H. Kamps (1987)
Cahiers de Topologie et Géométrie Différentielle Catégoriques
Similarity:
Displaying similar documents to “Note on homotopy pullbacks in abelian categories”
Homotopy over and under
Directed homotopy theory, II. Homotopy constructs.
Grandis, Marco (2002)
Theory and Applications of Categories [electronic only]
Similarity:
Modulo homotopy
J. R. Dennett (1982)
Cahiers de Topologie et Géométrie Différentielle Catégoriques
Similarity:
Heaps and unpointed stable homotopy theory
Lukáš Vokřínek (2014)
Archivum Mathematicum
Similarity:
In this paper, we show how certain “stability phenomena” in unpointed model categories provide the sets of homotopy classes with a canonical structure of an abelian heap, i.e. an abelian group without a choice of a zero. In contrast with the classical situation of stable (pointed) model categories, these sets can be empty.
Partitions of unity in homotopy theory
Tammo Tom Dieck (1971)
Compositio Mathematica
Similarity:
Some exact sequences of spaces
West, Robert W. (1968)
Portugaliae mathematica
Similarity:
Pullback and pushout squares in a special double category with connection
C. B. Spencer, Y. L. Wong (1983)
Cahiers de Topologie et Géométrie Différentielle Catégoriques
Similarity: