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32965
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location Moscow, Russia
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visits member for 3 years, 11 months
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umagon at google mail


Jun
24
reviewed Close Name the property $f(x) \ge x$
Jun
24
reviewed Close Show $\exists x\in\mathbb{R}^2$ such that $g(x)\neq x$ for all $1\neq g\in G$ for a movement
Jun
24
reviewed Close Determine the convergence of the infinite series
Jun
24
comment Contractible Subspace and Homotopy Equivalence
E.g. $X=S^1$, $A=S^1-pt$.
Jun
24
reviewed Close Uniform Space: Neighborhood System
Jun
21
reviewed Close Having troubles with this problem: Set theory, cardinality
Jun
21
reviewed Close Geometry proof. Need help please
Jun
20
comment Relation between $K$-theories
Related: Relationship between topological and Quillen's K-theory
Jun
18
reviewed Leave Closed Deradicalization of denominators
Jun
16
reviewed Looks OK Simple solving Skanavi book exercise: $\sqrt[3]{9+\sqrt{80}}+\sqrt[3]{9-\sqrt{80}}$
Jun
16
reviewed Looks OK Help me ID this weird $\pi$ formula
Jun
15
reviewed Looks OK integral representation of $\zeta(2)$
Jun
15
revised Gauss-type sums for cube roots
One concrete positive result added (+a typo fixed)
Jun
15
reviewed Close Sampling distribution of a Random Variable
Jun
14
reviewed Leave Closed $f(tx,ty,tz)=t^n \cdot f(x,y,z)$
Jun
14
reviewed Close $f(tx,ty,tz)=t^n \cdot f(x,y,z)$
Jun
14
reviewed Reject suggested edit on How do i prove that $A_4$ has a unique Sylow 2-subgroup
Jun
14
reviewed Reject suggested edit on $\pi^4 + \pi^5 \approx e^6$ is anything special going on here?
Jun
13
reviewed Close Ratios. In how much time could they complete the work?
Jun
13
reviewed Looks OK Stock analysis and forecast using chaos theory