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benblumsmith
  • Member for 11 years, 4 months
  • Last seen more than a month ago
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question
21
Direct combinatorial proof that $2^{2k} = \sum \binom{2i}{i}\binom{2j}{j}$?
Apr 8, 2017
question
20
Using a known result without a specific reference
Nov 28, 2017
question
17
When can a finite subgroup of $GL(2n,\mathbb{R})$ be viewed as a subgroup of $GL(n,\mathbb{C})$?
Jul 8, 2016
question
12
How bad does a ring have to be for a failure of "going-in-between"?
Mar 13, 2017
question
11
Sums of subsets of $\mathbb{Z}/n\mathbb{Z}$
Jan 23, 2011
question
10
Quotient of $S^3$ by Montgomery and Zippin's "wild involution"
Sep 9, 2016
question
9
Explicit isomorphism for quaternion algebras over $\mathbb{Q}$?
Mar 10, 2014
question
9
How do small central extensions drop the dimension of a faithful representation?
Feb 25, 2015
question
8
How fine an invariant of a representation is its quotient singularity?
Mar 26, 2016
question
8
Is the restriction of a graded automorphism linearizable in characteristic zero?
May 5, 2016
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90
In categorical terms, why is there no canonical isomorphism from a finite dimensional vector space to its dual?
55
Original works of great mathematician Évariste Galois
43
Submodule of free module over a p.i.d. is free even when the module is not finitely generated?
41
Why is the cartesian product so categorically robust?
39
Is There a Natural Way to Extend Repeated Exponentiation Beyond Integers?

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