Abstract
Connected sequences of functors whose domain, is the category of morphisms of an arbitrary abelian categoryA and whose range categoryB is also abelian are compared with the composition functors of Eckmann and Hilton acting between the same categories Sequences of functors of both types are obtained from any half-exact functorA→B ifA has enough injectives and projectives.
Version Information
This revised version was published online in November 2006 with corrections to the Cover Date.
Citation
Irwin S. Pressman. "Functors whose domain is a category of morphisms." Acta Math. 118 223 - 249, 1967. https://doi.org/10.1007/BF02392482
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