Mathematics
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Ben Blum-Smith
  • Member for 10 years, 10 months
  • Last seen more than a month ago
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All Questions Answers
Score Newest
question
90
In categorical terms, why is there no canonical isomorphism from a finite dimensional vector space to its dual?
Dec 30, 2013
answer
54
Original works of great mathematician Évariste Galois
Jan 12, 2012
question
43
Submodule of free module over a p.i.d. is free even when the module is not finitely generated?
Jun 25, 2012
question
41
Why is the cartesian product so categorically robust?
May 29, 2015
question
39
Is There a Natural Way to Extend Repeated Exponentiation Beyond Integers?
Aug 10, 2011
question
33
A function that is $L^p$ for all $p$ but is not $L^\infty$?
Dec 12, 2011
question
32
Tricky contour integral resulting from the integration of $\sin ax / (x^2+b^2)$ over the positive halfline
Oct 1, 2011
question
30
Algebraic closure for $\mathbb{Q}$ or $\mathbb{F}_p$ without Choice?
Feb 29, 2012
question
25
Elementary problems with group theoretic solutions
Jan 15, 2012
question
25
$\operatorname{Ann}(M\otimes_A N)=\operatorname{Ann}M+\operatorname{Ann}N$?
Jul 11, 2012
Top Meta posts
2
3
23
Is either Math.SE or StackOverflow an appropriate forum for questions about Magma?
13
Asking about wrong answer
4
What do you really like about working with/contributing to math-SE?
4
Partially-unresolved questions with substantial progress: should I post a very long question, or a question + answer?
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28
Is there any proof of the fundamental theorem of algebra that can be introduced to undergraduates who have just completed Calc III?
24
How can I estimate the length of an exam?
21
Direct combinatorial proof that $2^{2k} = \sum \binom{2i}{i}\binom{2j}{j}$?
20
Using a known result without a specific reference
18
Encouraging class participation

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