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Adam Epstein
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Math Under Toad
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question
24
Who named it the Snake Lemma?
Sep 11, 2012
question
23
When must it be sets rather than proper classes, or vice-versa, outside of foundational mathematics?
Feb 2, 2013
answer
21
Is $\mathbb R^3$ the square of some topological space?
Jan 19, 2013
question
15
Category of topological spaces with open or closed maps
Dec 25, 2012
question
15
Can one exhibit an explicit Kuratowski infinite set without invoking Replacement?
Jan 2, 2013
question
15
Essential uniqueness of the real-analytic structure on $\mathbb R$
Jan 16, 2013
question
15
How much choice is required to prove concretizability theorems in category theory?
Sep 9, 2013
question
14
Finite dimensional real division algebras
Aug 25, 2012
question
14
Algebraic proofs of algebraic theorems about algebraically closed fields
Apr 13, 2016
answer
12
Where in ordinary math do we need unbounded separation and replacement?
Mar 5, 2013