David Speyer
Associate 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.
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 math.lsa.umich.edu/~speyer
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 126Evaluate $\int_0^1 \frac{\log \left( 1+x^{2+\sqrt{3}}\right)}{1+x}\mathrm dx$
 96Why do primes dislike dividing the sum of all the preceding primes?
 81Invertible matrices of natural numbers are permutations... why?
 73$\prod_{n=1}^{\infty} n^{\mu(n)}=\frac{1}{4 \pi ^2}$
 68Advantages of IMO students in Mathematical Research
 63Irreducibility of polynomials in two variables
 62Why could Mertens not prove the prime number theorem?
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