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earned this badge 28 times.
Identities of commutators
Awarded May 26, 2021 at 13:08
Integer vectors in the kernel of an integer matrix
Awarded Apr 19, 2021 at 20:58
Sums of squares of primes [closed]
Awarded Nov 25, 2020 at 19:06
Finitely generated, infinite, residually finite groups whose finite quotients are $p$-groups.
Awarded Aug 9, 2020 at 2:03
Representability of matroids over $\mathbb R$
Awarded Dec 14, 2019 at 6:35
Additive combinatorics and large Fourier coefficients
Awarded Jun 22, 2019 at 22:55
Word maps on compact Lie groups
Awarded Feb 15, 2019 at 12:15
Analogue of Smith normal form for matrices over $\mathbb Z[t]$
Awarded Sep 11, 2018 at 21:55
Fejer's theorem and convergence of Fourier series in measure
Awarded Dec 18, 2017 at 11:07
Is every finitely generated idempotent ring singly generated as a two-sided ideal?
Awarded Oct 10, 2016 at 17:12
Affine manifolds
Awarded Sep 9, 2016 at 14:14
Which natural numbers are a square minus a sum of two squares?
Awarded Jan 27, 2016 at 12:12
Semi-simple matrices over fields of finite characteristic
Awarded Dec 16, 2015 at 20:15
Subalgebras of von Neumann algebras
Awarded Jul 8, 2014 at 17:19
Generation of finite index subgroups
Awarded Jan 15, 2014 at 17:11
Finite subgroups of unitary groups
Awarded May 14, 2013 at 14:20
What is Realistic Mathematics?
Awarded May 9, 2013 at 18:35
Conjugacy classes and reduced group $C^*$-algebra of an amenable group
Awarded Feb 18, 2013 at 16:35
Finite-dimensional subalgebras of $C^\star$-algebras
Awarded Nov 14, 2012 at 1:50
Nelson's program to show inconsistency of ZF
Awarded Nov 11, 2012 at 21:05
Furstenberg's Conjecture on 2-3-invariant continuous probability measures on the circle
Awarded Aug 7, 2012 at 9:50
(post deleted or otherwise unavailable)
Awarded Jul 22, 2011 at 13:20
Adjacency matrices of graphs
Awarded Jun 10, 2011 at 19:50
Why is "P vs. NP" necessarily relevant?
Awarded May 3, 2011 at 13:35
How many relations of length $n$ can exists in a group without enforcing shorter relations?
Awarded Apr 21, 2011 at 15:20
Trees in groups of exponential growth
Awarded Feb 28, 2011 at 19:35
The multiplicative order of 2 modulo primes
Awarded Dec 15, 2010 at 16:50
Fourier transforms of characteristic functions
Awarded Aug 11, 2010 at 7:35

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