10,215 reputation
33066
bio website
location Moscow, Russia
age
visits member for 4 years
seen 6 hours ago

umagon at google mail


8h
reviewed Leave Closed Fibonacci series, which is most pure mathematically?
8h
reviewed Leave Closed Why Must the Degree of this Map be 0?
10h
revised The Name for $\mathbb{R}$, $\mathbb{C}$, $\mathbb{H}$ and $\mathbb{O}$ Exclusively Algebras?
edited tags
17h
reviewed Close Course And Bearing Word problem.
2d
reviewed No Action Needed How did Le Verrier calculate Neptune's position?
2d
reviewed Close What's a bi-rhombus?
2d
reviewed Leave Open Explicit expression for homeomorphism and homotopy equivalence
2d
reviewed No Action Needed Does the boundaries of non-disjoint sets in Euclidean space have common element?
2d
reviewed Leave Closed How to find laplace transform of (t.sint.e^t)
Jul
21
reviewed Reviewed find a formula for $\sin3 \theta$ in terms of $\sin \theta$,$\cos \theta$ by using an angle-sum formula for sin(2θ+θ)
Jul
21
reviewed Leave Closed Write the given expression as an algebraic expression in $x$. $\cos (2{\tan ^{ - 1}}x)$
Jul
21
reviewed Close How many binary strings are there of length n with k ones?
Jul
21
reviewed Close the number of cube roots in a finite field
Jul
21
reviewed Reviewed Potential equations with boundary conditions
Jul
21
reviewed Close Number of normal subgroups of a non-abelian group of order 21
Jul
21
reviewed Close number of group homomorphism from the symmetric group $S_3$ to the additive group $\Bbb Z/6\Bbb Z$
Jul
21
awarded  Yearling
Jul
20
revised Is at least one of $6k + 1$ or $6k-1$ prime?
edited tags
Jul
20
reviewed Close child custody percentage
Jul
20
reviewed Close Euler's method problem