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David E Speyer's user avatar
David E Speyer's user avatar
David E Speyer's user avatar
David E Speyer
  • Member for 13 years, 11 months
  • Last seen this week
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About

Professor of Mathematics at the University of Michigan. My research interests are in combinatorial algebraic geometry, particularly Schubert calculus, matroids and cluster algebras. I also enjoy thinking about number theory and computational mathematics.

Disclaimer: I have 10 years of answers on MO. I do not feel obliged to respond to every comment I get.

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203
Evaluate $\int_0^1 \frac{\log \left( 1+x^{2+\sqrt{3}}\right)}{1+x}\mathrm dx$
Jun 25, 2013
183
How to find the Galois group of a polynomial?
Apr 8, 2013
101
Convergence of $\sqrt{n}x_{n}$ where $x_{n+1} = \sin(x_{n})$
Aug 24, 2010
99
Advantages of Mathematics competition/olympiad students in Mathematical Research
Sep 17, 2010
88
Different ways to prove $\sum_{k=1}^\infty \frac{1}{k^2}=\frac{\pi^2}{6}$ (the Basel problem)
Oct 31, 2010
76
Is it morally right and pedagogically right to google answers to homework?
Sep 3, 2012
64
Evaluating the integral $\int_0^\infty \frac{\sin x} x \,\mathrm dx = \frac \pi 2$?
Feb 6, 2012
62
Can squares of infinite area always cover a unit square?
Dec 20, 2017
62
Convergence of $\sum \limits_{n=1}^{\infty}\sin(n^k)/n$
Aug 12, 2010
58
How do people come up with difficult math Olympiad questions?
Sep 27, 2012
Top Meta posts
13
27
63
Request for my id to be deleted
60
Request to keep an eye out for PROMYS admissions problems
41
Are questions of the form "has this ever been studied?" appropriate?
37
What is the relation between Latex and MathJax?
33
What do we do with users who post numerous unlabeled homework questions?
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171
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129
Why do primes dislike dividing the sum of all the preceding primes?
117
How did Cole factor $2^{67}-1$ in 1903?
109
Invertible matrices of natural numbers are permutations... why?
100
Irreducibility of polynomials in two variables