Paper/General Theory of Natural Equivalences
Eilenberg, Samuel; MacLane, Saunders. "General Theory of Natural Equivalences". Transactions of the American Mathematical Society (Vol. 58, No. 2 (Sep., 1945), ed.). local page: American Mathematical Society: 231-294.
Barry Mazur wrote a paper[1]: When is one thing equal to some other thing? to reflect on Saunder MacLane's work.
References
- ↑ Mazur, Barry. "When is one thing equal to some other thing?" (PDF). local page: Harvard Univesity website.