Category Theory to Yoneda's Lemma


Title: Category Theory to Yoneda's Lemma
Author: Greg O'Keefe
Submission date: 2005-04-21
Abstract: This development proves Yoneda's lemma and aims to be readable by humans. It only defines what is needed for the lemma: categories, functors and natural transformations. Limits, adjunctions and other important concepts are not included.
Change history: [2010-04-23]: The definition of the constant equinumerous was slightly too weak in the original submission and has been fixed in revision 8c2b5b3c995f.
  author  = {Greg O'Keefe},
  title   = {Category Theory to Yoneda's Lemma},
  journal = {Archive of Formal Proofs},
  month   = apr,
  year    = 2005,
  note    = {\url{},
            Formal proof development},
  ISSN    = {2150-914x},
License: GNU Lesser General Public License (LGPL)