User Fedor Petrov - MathOverflow Meta

Fedor Petrov

Member for 13 years, 7 months
Last seen more than 1 year ago

pdmi.ras.ru/eng/perso/…
Saint-Petersburg, Russian Federation

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167

17 camels trick

69

integral of a "sin-omial" coefficients=binomial

59

Examples of notably long or difficult proofs that only improve upon existing results by a small amount

54

If any open set is a countable union of balls, does it imply separability?

51

The number $\pi$ and summation by $SL(2,\mathbb Z)$