Reputation
4,421
Next privilege 5,000 Rep.
Approve tag wiki edits
Badges
1 13 41
Newest
 Enlightened
Impact
~33k people reached

Dec
14
answered abstract algebra question with p-subgroup
Nov
27
answered Why this graph has automorphism group is isomorphic to the cyclic group of order 4?
Nov
24
answered prove that we can calculate $\sum^n_{i=1} d^{2}_{i}$ from the spectrum of laplacian matrix of graph.
Nov
24
answered how we can understand from spectrum of laplacian matrix of a graph that this graph is regular or not .
Nov
20
answered The limit of $\tan(n)$
Nov
4
answered Prove isomorphism for a commutative ring
Oct
18
answered Proving ring $R$ with unity is commutative if $(xy)^2 = x^2y^2$
Sep
22
answered Example of infinite graph
Aug
26
answered Mathematical Analysis 2nd ed. - Apostol, Exercise 4.2
Aug
16
answered Characterizing groups with linear subgroups
Aug
16
answered There is no group whose quotient by the center is isomorphic to the quaternion group
Apr
2
answered Raising multiplied group elements to a power
Apr
2
answered Product of cyclic groups
Apr
2
answered If in a group $G$, we have $a^5 = e$ and $aba^{-1} = b^2$ for some $a$, $b$ in $G$, then what is the order of $b$?
Mar
29
answered Linear Algebra: Suppose A is n x m, and n < m. Show that A'A is singular.
Mar
29
answered proving to see that a normal subgroup is equal to a subgroup if one of the subgroup is the identity.
Mar
11
answered Let G be a group and let H,K be subgroups of G where |H|=12 and |K|=5. Then the intersection of H and K = {e}.
Mar
10
answered Prove that H is a subgroup of G
Mar
6
answered Signature of permutations is a homomorphism
Mar
6
answered Irreducible Representation and the center of a group