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33069
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location Moscow, Russia
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visits member for 4 years, 3 months
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umagon at google mail


Jul
13
reviewed Leave Closed I want to study Numerical linear algebra
Jul
13
reviewed Close limit of a sum of powers of integers
Jul
13
reviewed No Action Needed Solve for an article's time constant given three internal temperatures and their times.
Jul
12
reviewed Close How to prove validity of following sequent
Jul
12
comment Probability of their's constituting a triangle?
...and see also mathoverflow.net/questions/2014
Jul
12
comment Probability of their's constituting a triangle?
...or of math.stackexchange.com/questions/26424
Jul
12
reviewed Close prove validity of following sequent
Jul
12
reviewed Leave Open Herstein Question: $G^{i}$ normal in $G$?
Jul
12
reviewed Close Proof using mean value theorem
Jul
12
reviewed No Action Needed How to find the third vertex of an isosceles triangle given 2 points.
Jul
12
reviewed Close solving $|(x-3)(x-1)| $$\le$ $|\frac{1-x}{x-3}|$ graphicly
Jul
12
reviewed Close Distribution of the sum of two independent normal variables
Jul
12
reviewed Close Why set is not equal its closure minus its boundary?
Jul
12
reviewed Close Simple method the show that a group of order 15 is cyclic
Jul
12
reviewed Reviewed Trigonometry expression 171
Jul
12
reviewed Close Is it true? The inequality $\frac{pa+qb}{a+b} \le p+q$,
Jul
12
reviewed Close Interesting examples of Cauchy's Integral formula
Jul
11
reviewed No Action Needed Version of Chevalley's Theorem proving $\mathbb{F}_q$ is a $C_1$-field for $\mathbb{Z}/p^n\mathbb{Z}$?
Jul
11
answered Recurrence $(n+2)\text{Cat}_{n+1}=(4n+2)\text{Cat}_n$ for non-crossing matchings
Jul
11
reviewed Close deriving $y=\sqrt{x+\sqrt{x+\sqrt{x}}\cdots} $