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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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76 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
15 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
9 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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