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User:Michiexile/MATH198

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Course overview

Page is work in progress for background material for the Fall 2009 lecture course MATH198 on Category Theory with a view towards applications that I am planning to give at Stanford University.

Single unit course. 10 lectures. Each lecture is Wednesday 4.15-5.05 in 380F.


  • User:Michiexile/SU09 Lecture 1
    • Category: Definition and examples.
    • Concrete categories.
      • Set.
      • Various categories capturing linear algebra.
    • Small categories.
      • Partial orders.
      • Monoids.
      • Finite groups.
    • Haskell-Curry isomorphism.


  • User:Michiexile/SU09 Lecture 2
    • Special morphisms
      • Epimorphism.
      • Monomorphism.
      • Isomorphism.
      • Endomorphism.
      • Automorphism.
    • Special objects
      • Initial.
      • Terminal.
      • Null.


  • User:Michiexile/SU09 Lecture 7
    • Recursion as a categorical construction.
    • Recursive categories.
    • Recursion as fixed points of monad algebras.
    • Recursion using special morphisms.
      • Hylo-
      • Zygo-
      • et.c.