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33066
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location Moscow, Russia
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visits member for 4 years
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umagon at google mail


Jul
19
reviewed Close Differential equations,x[t] is periodic
Jul
19
reviewed Leave Closed algebra -precalculus
Jul
18
awarded  Proofreader
Jul
18
reviewed Reject suggested edit on Prove that the convex hull of a set is the smallest convex set containing that set
Jul
18
revised Eilenberg-Maclane space $K(G\rtimes H, 1)$ for a semi-direct product.
edited tags
Jul
18
comment Intuition for the definition of the Gamma function?
(Somewhat) related: How to come up with the gamma function? & Understanding the Gamma function
Jul
17
reviewed Leave Open Ordered field with nested intervals axiom without Archimedean axiom
Jul
17
revised What does the colon use in the decimal place mean?
edited tags
Jul
17
reviewed Leave Closed Which mathematical ideas most influenced the way you think?
Jul
17
reviewed Leave Closed Is there a formula for Merten's function $M(x)=\sum_{n\leq x}\mu (n)$?
Jul
17
reviewed Close Prove that the cyclic group of order $3$ is isomorphic to $\Bbb Z_3$ under addition. Show answer using a proof and justification for each step.
Jul
17
reviewed Close Permutation problem - How many permutations are there such that no two numbers are immediately adjecent?
Jul
17
reviewed No Action Needed A maximal subset of $S^2$ with respect to a connectedness property
Jul
17
reviewed Leave Closed I want to study Numerical linear algebra
Jul
16
reviewed Reject suggested edit on Dilation and translation of the Dirac Delta distribution
Jul
16
reviewed Close How to put these equations in standard form
Jul
16
reviewed No Action Needed Finitely Generated Subset
Jul
16
reviewed Close Wolfram Alpha “Rule of Three”
Jul
16
reviewed Close Give an example of a function $f$ satisfying $\lim_{x\to 0}(f(x)f(2x))=0$,but $\lim_{x\to 0}f(x)$ does not exists
Jul
16
reviewed No Action Needed How many positive integer solutions are there to the inequality $x_1+x_2+…+x_r\le n$?