351 reputation
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visits member for 2 years, 4 months
seen Jul 11 at 21:47

Jul
3
accepted Factorisation of $x^{4}-x^{2}+2x+1$ in $\mathbb Q[x]$?
Jul
2
asked Factorisation of $x^{4}-x^{2}+2x+1$ in $\mathbb Q[x]$?
Jun
18
comment How many irreducible factors of grade $6$ there is in $\mathbb{F}_{2}\left[ x\right]$?
Thanks, this is interesting, but still would like to know how could the hint above lead to solve the question.
Jun
18
asked How many irreducible factors of grade $6$ there is in $\mathbb{F}_{2}\left[ x\right]$?
Jun
12
accepted If I have the presentation of a group, how can I find the commutator subgroup of it?
Jun
12
accepted Finding the smallest integer $n$ such that $1+1/2+1/3+…+1/n≥9$?
Jun
11
asked If I have the presentation of a group, how can I find the commutator subgroup of it?
Jun
4
awarded  Teacher
Jun
4
answered formulate this scheduling problem as linear programming problem
Jun
3
asked formulate this scheduling problem as linear programming problem
Apr
28
revised Finding the smallest integer $n$ such that $1+1/2+1/3+…+1/n≥9$?
edited body
Apr
27
comment Finding the smallest integer $n$ such that $1+1/2+1/3+…+1/n≥9$?
Very nice, thanks a lot.
Apr
27
asked Finding the smallest integer $n$ such that $1+1/2+1/3+…+1/n≥9$?
Feb
28
comment Fundamental group of the Klein bottle, using action of a group?
this is very nice, thanks a lot.
Feb
24
asked Fundamental group of the Klein bottle, using action of a group?
Jan
16
awarded  Tumbleweed
Nov
21
asked Computing discret logarithm $log_{g}(h)$ such that $g,h$ are generators for the cyclic group $Z^{*}_{p}$
Oct
20
asked If the action of a group $G$ on $\mathbb{R}$ is properly discontinuous then G is isomorph to $\mathbb{Z}$?
Oct
19
accepted $G$ finite group acts freely on top. sp. $X$, can we find for every $x\in X$ an open neighborhood such that:
Oct
19
comment G is a topological group acts on topological space $X$, is $f_{g}:X\rightarrow X, x\rightarrow g*x$ continuous?
yes, actually $\phi:G\times X \rightarrow X$ is continuous, but how can we prove that $f_{g}:X\rightarrow X$ defined above is continuous