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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, 8 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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Top posts
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All Questions Answers
Score Newest
answer
164
Most memorable titles
Oct 31, 2010
answer
127
Why do primes dislike dividing the sum of all the preceding primes?
Feb 1, 2013
question
114
How did Cole factor $2^{67}-1$ in 1903?
May 22, 2015
answer
108
Invertible matrices of natural numbers are permutations... why?
Apr 18, 2011
answer
99
Irreducibility of polynomials in two variables
Feb 3, 2010
answer
87
$\prod_{n=1}^{\infty} n^{\mu(n)}=\frac{1}{4 \pi ^2}$
Mar 12, 2013
answer
82
Why could Mertens not prove the prime number theorem?
May 2, 2012
answer
72
Conceptual reason why the sign of a permutation is well-defined?
Mar 8, 2022
answer
72
Applications of the Chinese remainder theorem
Dec 29, 2009
question
72
What is Lagrange Inversion good for?
Jul 16, 2010
Top Meta posts
9
18
32
What is our policy on asking about correctness of preprints?
27
What are our procedures if a user complains about harassment or abuse?
24
Policy toward GPT-generated conjectures?
23
Request to keep an eye out for PROMYS admissions problems
23
Questions which are research level but where the OP is unlikely to have the background to follow the research
Top network posts
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197
Evaluate $\int_0^1 \frac{\log \left( 1+x^{2+\sqrt{3}}\right)}{1+x}\mathrm dx$
169
How to find the Galois group of a polynomial?
101
Convergence of $\sqrt{n}x_{n}$ where $x_{n+1} = \sin(x_{n})$
97
Advantages of Mathematics competition/olympiad students in Mathematical Research
86
The Basel problem

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