Abstract Homological Algebra

  • M. Scott Osborne
Part of the Graduate Texts in Mathematics book series (GTM, volume 196)


A close look at much of the earlier material, especially in the last chapter, reveals the strong connection between projectives and injectives. The idea is this: Formulate your result purely in terms of arrows (morphisms), then reverse them. That is, work in the opposite category. Not everything can be done this way, but a surprising amount can.


Exact Sequence Commutative Diagram Final Object Additive Category Abelian Category 
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Copyright information

© Springer Science+Business Media New York 2000

Authors and Affiliations

  • M. Scott Osborne
    • 1
  1. 1.Department of MathematicsUniversity of WashingtonSeattleUSA

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