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visits member for 3 years, 11 months
seen 49 mins ago

Oct
19
reviewed Approve Forcing a functor to map to a given set
Jul
28
reviewed Reject Is the coefficient ring $R$ of a group ring $RG$ necessarily projective as an $RG$-module?
Jun
15
reviewed Approve Ring homomorphisms map non units to non units
Jun
10
reviewed Edit Splitting fields and isomorphic
Nov
14
reviewed Approve $g : Z \rightarrow W$ a regular covering map where $Z$ and $W$ are path-connected, and $\pi_1(Z)$
Oct
30
reviewed Reject What do $x\in[0,1]^n$ and $x\in\left\{ 0,1\right\}^n$ mean?
Oct
30
reviewed Approve Hilbert's Nullstellensatz and maximal ideals
Feb
3
reviewed Satisfactory An entire function with two periods
Dec
29
reviewed Reject What is the rank of the cofactor matrix of a given matrix?
Dec
29
reviewed Close Why $\sqrt{\frac {\sum(x-\mu)^2} {N}}$ instead of $\frac {\sum{\Bigl|x-\mu\Bigr|}} {N}$?
Dec
28
reviewed No Action Needed A number of dice rolls to see every number at least once
Dec
28
reviewed No Action Needed How to prove that the absolute difference of two numbers
Oct
25
reviewed Reject Basic introduction to algebraic topology using simplicial complexes
Sep
11
reviewed Approve Solving P vs NP with computer
Sep
10
reviewed Leave Open How is a section viewed as a bundle map?
Sep
1
reviewed Reject Classgroup of $\mathbb{Q}(\sqrt{2},\sqrt{-13})$
Aug
29
reviewed Looks OK Question about math symbol $\bigsqcup$
Aug
26
reviewed Leave Open How to find the limit $\lim\limits _{ x\to \infty } \left( \sqrt { x^2+3x } -\sqrt { x^2+x } \right) $?
Aug
26
reviewed Leave Open Is it contradictory to define zero as the empty set in ZFC?
Aug
26
reviewed Close Is $f(t)=t^\alpha$ for $\alpha\in(0,1)$ a sub-additive function?