Towards a Readable Formalisation of Category Theory

Greg O'Keefe
2004 Electronical Notes in Theoretical Computer Science  
We formally develop category theory up to Yoneda's lemma, using Isabelle/HOL/Isar, and survey previous formalisations. By using recently added Isabelle features, we have produced a formal text that more closely approximates informal mathematics.
doi:10.1016/j.entcs.2003.12.014 fatcat:c5pslpe3sjaubby3li36t34avi