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David C

What my colleagues think I do: category theory. What my friends think I do: calculus. What I think I do: algebraic topology. What I really do: linear algebra.
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50 Atiyah's paper on complex structures on $S^6$ Oct 31 '16
30 Non-stably trivial bundle with trivial characteristic classes Nov 18 '12
27 Simply connected finite CW-complex with only finitely many nontrivial homotopy and homology groups May 24 '15
23 Solving algebraic problems with topology Jun 1 '15
20 What are examples when the equality of some invariants is good enough in algebraic topology? Sep 18 '15
20 Cobordism of orbifolds? Dec 5 '12
19 Mapping class groups in high dimension Oct 1 '15
19 A question on connected sum of compact manifolds Oct 31 '17
16 Is there a “geometric” intuition underlying the notion of normal varieties? Dec 27 '12
15 Relations among Pontryagin numbers Oct 17 '16
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