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67 votes

Why is the Fourier transform so ubiquitous?

ag.algebraic-geometry soft-question fourier-transform asked Feb 11, 2020 at 20:07
mathoverflow.net

21 votes

Surmounting set-theoretical difficulties in algebraic geometry

ag.algebraic-geometry ct.category-theory set-theory topos-theory adjoint-functors asked Nov 16, 2019 at 3:12
mathoverflow.net

15 votes

What to expect from spectral algebraic geometry

ag.algebraic-geometry higher-category-theory big-picture derived-algebraic-geometry ring-spectra asked Dec 25, 2017 at 8:54
mathoverflow.net

14 votes

When are quadratic rings of integers unique factorization domains?

number-theory commutative-algebra integers unique-factorization-domains asked Nov 28, 2018 at 3:34
math.stackexchange.com

12 votes

Is every finite group a normal subgroup of a symmetric group?

group-theory asked Jun 27, 2016 at 22:56
math.stackexchange.com

11 votes

What is the symmetric monoidal structure on the $(\infty,1)$-category of spectra?

ct.category-theory homotopy-theory higher-category-theory higher-algebra ring-spectra asked Dec 29, 2017 at 3:09
mathoverflow.net

9 votes

Group objects in $\infty$-categories

ct.category-theory infinity-categories groupoids asked Feb 23, 2018 at 22:41
mathoverflow.net

9 votes

What is the relation between the material conditional in logic and conditionals that we use every day?

logic philosophy-of-language language asked Jul 8, 2014 at 4:06
philosophy.stackexchange.com

9 votes

Tannaka duality for semisimple groups

ag.algebraic-geometry rt.representation-theory ct.category-theory tannakian-category asked Apr 19, 2019 at 22:39
mathoverflow.net

9 votes

Definition of $E_n$-modules for an $E_n$-algebra

ct.category-theory ac.commutative-algebra higher-category-theory infinity-categories higher-algebra asked Jul 18, 2019 at 18:02
mathoverflow.net

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