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Peter LeFanu Lumsdaine

Mathematician, math.LO/math.CT, currently Assistant Professor at Stockholm University. Mainly working in categorical logic, especially homotopy type theory and higher categories.

Previously worked at Institute for Advanced Study, Princeton; Dalhousie University, Halifax, Nova Scotia; and Carnegie Mellon University, Pittsburgh.

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Top posts (136) All Questions Answers | Votes Newest

53 Why should we believe in the axiom of regularity? Sep 29 '15
40 Non-examples of model structures, that fail for subtle/surprising reasons? May 2 '10
37 Sexy vacuity … ${{{{{{}}}}}}$ Nov 14 '10
37 Why are matrices ubiquitous but hypermatrices rare? Dec 2 '10
37 Are dagger categories truly evil? Oct 5 '15
32 Are there categories whose internal hom is somewhat 'exotic'? Aug 18 '19
30 What “metatheory” did early set theory/logic researchers use to prove semantic results? Apr 15 '18
27 Is a vector space naturally isomorphic to its dual? Nov 4 '19
25 Abstract Thought vs Calculation Jul 2 '10
23 Is Lemma D4.5.3 in the Elephant correct? (“In a topos, weakly projective implies internally projective.”) Mar 4 '16
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