MathOverflow

Notable Question

 Notable Question
Question with 2,500 views. This badge can be awarded multiple times.

earned this badge 31 times.
What is the term for combining functions $f_1,f_2,\dots,f_n$ into a tuple $(f_1,\dots,f_n)$?
Awarded Jan 16 at 20:17
Are there any undecidability results that are not known to have a diagonal argument proof?
Awarded Sep 7, 2023 at 15:57
What is the most direct proof of the Riemann hypothesis for Dirichlet L-functions over function fields?
Awarded Jun 4, 2023 at 15:19
Is there a cheap proof of power savings for exponential sums over finite fields?
Awarded Apr 29, 2023 at 16:25
What is the cofinality of the co-infinite subsets of ${\bf N}$?
Awarded Feb 12, 2023 at 0:27
When is P(x)-Q(y) irreducible?
Awarded May 10, 2022 at 22:37
What well known results with countability assumptions can be naturally extended to uncountable settings?
Awarded Jan 11, 2022 at 7:52
Is there a nullstellensatz for trigonometric polynomials?
Awarded Nov 11, 2021 at 3:07
Is a symplectic camel actually prohibited from passing through the eye of a needle?
Awarded Sep 23, 2021 at 20:36
When can a function be made positive by averaging?
Awarded Jul 13, 2021 at 18:26
Is there an algebraic geometry analogue of the closed graph theorem?
Awarded Jan 28, 2020 at 22:15
Can random variables that almost surely solve equations be repaired to surely solve these equations?
Awarded Jan 27, 2020 at 4:45
Is there a high level reason why the inverse square law of gravitation yields periodic orbits without precession?
Awarded Oct 17, 2019 at 20:25
When can one continuously prescribe a unit vector orthogonal to a given orthonormal system?
Awarded Nov 20, 2018 at 1:15
Why are Schur multipliers of finite simple groups so small?
Awarded Oct 15, 2018 at 17:55
Small residue classes with small reciprocal
Awarded Oct 2, 2018 at 19:45
How much of character theory can be done without Schur's lemma or the Artin-Wedderburn theorem?
Awarded Jul 23, 2018 at 18:32
Finding a 1-form adapted to a smooth flow
Awarded Nov 25, 2017 at 20:03
An etale version of the van Kampen theorem
Awarded Apr 6, 2016 at 4:34
Existence of simultaneously normal finite index subgroups
Awarded Jan 29, 2016 at 7:18
Unconditional nonexistence for the heat equation with rapidly growing data?
Awarded Aug 26, 2015 at 19:23
Is this differential identity known?
Awarded Jun 11, 2015 at 19:27
"Transitivity" of the Stone-Cech compactification
Awarded Apr 25, 2014 at 14:18
Non-enumerative proof that there are many derangements?
Awarded Apr 12, 2014 at 16:05
What is the standard notation for a multiplicative integral?
Awarded Jan 19, 2014 at 7:17
How many orders of infinity are there?
Awarded Jan 10, 2013 at 13:50
Riemannian surfaces with an explicit distance function?
Awarded Jun 20, 2012 at 10:05
Is there a natural random process that is rigorously known to produce Zipf's law?
Awarded Dec 1, 2011 at 14:50
How small can a sum of a few roots of unity be?
Awarded Jun 27, 2011 at 17:20
Does the inverse function theorem hold for everywhere differentiable maps?
Awarded Mar 13, 2011 at 21:50
Can a group be a universal Turing machine?
Awarded Oct 28, 2010 at 6:20

Others with this badge