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**Colin McLarty** is an American logician whose publications have ranged widely in philosophy and the foundations of mathematics, as well as in the history of science and of mathematics.

McLarty's *Elementary Categories and Elementary Toposes* describes category theory and topos theory at an elementary level.^{[1]}

He has written papers about Saunders Mac Lane, one of the founders of category theory.

He is a member of the Grothendieck Circle, which provides on-line and open access to many writings about the mathematician Alexandre Grothendieck, whose category-theoretic genius revolutionized Banach-space theory and algebraic geometry and whose life has fascinated many biographers and mathematical scientists.^{[2]}

McLarty has also written about the German algebraist, Emmy Noether, who was a Jewish woman, and her involvement with German political history.^{[3]}

At Case Western Reserve University (CWRU), Colin McLarty is the Truman P. Handy Professor of Philosophy and a previous Chair of the Philosophy Department.

At CWRU, he is also a professor of mathematics.

- McLarty, Colin (1992).
*Elementary Categories, Elementary Toposes*. Oxford: Oxford University Press. ISBN 0-19-853392-6. - Colin McLarty,
*The Uses and Abuses of the History of Topos Theory*,*Brit. J. Phil. Sci*, 41 (1990) p 355. - Colin McLarty, 'Emmy Noether’s ‘Set Theoretic’ Topology: From Dedekind to the rise of functors' in
*The Architecture of Modern Mathematics: Essays in history and philosophy*(edited by Jeremy Gray and José Ferreirós), Oxford University Press (2006) p. 211–35. - McLarty, Colin, 2005, "Saunders Mac Lane (1909–2005): His Mathematical Life and Philosophical Works,"
*Philosophia Mathematica 13*: 237–51. With selected bibliography emphasizing Mac Lane's philosophical writings. - --------, 2007, "The Last Mathematician from Hilbert's Göttingen: Saunders Mac Lane as Philosopher of Mathematics,",
*British Journal for the Philosophy of Science 58(1)*: 77–112.

- "Abstract nonsense", a (usually ironic) term for category theory and category-theoretic arguments in homological algebra
- "Generalized abstract nonsense", an ironic and affectionate term for topos theory
- Other topos theorists (besides Saunders Mac Lane):

**^***Elementary Categories, Elementary Toposes.**^**website of the Grothendieck Circle.**^**Journal*History of Mathematics.*

- Personal website of Colin McLarty
- CWRU website of Colin McLarty
- Grothendieck Circle, which lists McLarty as a member. (A collection of mathematical and biographical information, photos, links about Alexander Grothendieck.)
- Colin McLarty at the Mathematics Genealogy Project

Categories:

- Category theorists
- Mathematical logicians
- American logicians
- Philosophers of mathematics
- Historians of mathematics
- Philosophers of science
- Historians of science
- Intellectual historians
- Algebraists
- Algebraic geometers
- 20th-century American mathematicians
- 21st-century American mathematicians
- American philosophers
- 20th-century philosophers
- Living people
- 21st-century philosophers