Sergei Ivanov
I am a research fellow at St.Petersburg Department of Steklov Math Institute
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Saint Petersburg, Russia
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Member for 11 years, 1 month
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1 profile view
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Last seen Mar 31 '19 at 22:22
Top network posts
- 117 solving $f(f(x))=g(x)$
- 96 Is the sphere the only surface all of whose projections are circles? Or: Can we deduce a spherical Earth by observing that its shadows on the Moon are always circular?
- 63 How to solve $f(f(x)) = \cos(x)$?
- 61 Is there a dense subset of the real plane with all pairwise distances rational?
- 57 Smoothness of distance function in Riemannian Manifolds
- 56 How do they verify a verifier of formalized proofs?
- 45 Is every closed set of Q² the intersection of some connected closed set of R² with Q²
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