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Aru Ray

I am a researcher at the Max Planck Institute for Mathematics in Bonn, Germany. Previously I was a postdoc at Brandeis University, a graduate student at Rice University, and an undergraduate at SUNY Geneseo, all in the USA. I spent most of my life pre-college in Kolkata, India.

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Top posts (28) All Questions Answers | Votes Newest

18 Proving that the general linear group is a differentiable manifold Jul 26 '12
16 Are fields flat $\mathbb Z$-modules? Mar 26 '12
14 Are there any simply connected parallelizable 4-manifolds? Jun 13 '13
13 Explanations of Lebesgue number lemma Feb 3 '12
12 Use of Reduced Homology Jul 13 '11
8 What algebraic topology book to read after Hatcher's? Mar 7 '12
5 Universal covering of $SO(3,\mathbb{R})$ Mar 7 '12
4 Comparison Theory: Test for convergence Jan 20 '13
3 Prove $\frac{\sin A \cos A}{\cos^2 A - \sin^2 A} = \frac{\tan A}{1-\tan^2 A}$ Jul 16 '12
3 Proving an inequality Jul 14 '11
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