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David E Speyer

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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78 What are the most common pitfalls awaiting new users? Feb 18 '13
20 No response to an infinite limit Dec 17 '13
20 Is there a clean way to extract the subspaces invariant under a list of matrices? Aug 15 '12
16 How can I rationalize the denominator of an expression? Aug 26 '12
11 Why can't I use Sequence to perform a Select like task? [duplicate] Nov 13 '12
10 How to express the original ideal elements in the Groebner basis? Aug 14 '12
10 FourierSeries for rational function looks wrong May 15 '13
10 Which DirichletCharacter is KroneckerSymbol? Mar 12 '13
7 Testing for primality in quadratic rings? Feb 18 '13
6 How does RootOfUnityQ work? Aug 15 '12
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