1,406 reputation
518
bio website
location Beersheba, Israel
age
visits member for 3 years, 10 months
seen Dec 12 at 19:12

I'm an Ph.D student of mathematics at Ben-Gurion University, Israel. Mainly working in Representation Theory.


Oct
10
comment how to show a scalar product defined by trace of matrices is non-degenerate
Part (b) is indeed correct, due to the fact that $A$ is assumed symmetric.
Sep
30
awarded  Explainer
Sep
24
awarded  Autobiographer
Sep
8
comment how to prove this group of the binary operation
what have you tried? where did you get stuck?
Aug
29
revised Combinatorial interpretation of an equality
deleted 11 characters in body
Aug
29
asked Combinatorial interpretation of an equality
Aug
24
answered Explanation for the number of partitions of $\{1,\dots,n\}$ into $k$ parts
Jul
18
comment Involutions of the second type in a division algebra
Thanks for the comment. The answer, apparently, is that they sometimes exists and sometimes not- if your base field is local then there aren't any involutions of the second type. In a global setting one can construct an example, but only when the degree of the algebra is 2. In a more abstract setting- I don't know...
Jul
15
revised Topological group with discrete topology
added 6 characters in body
Jul
15
comment Topological group with discrete topology
Oh, I see what you mean.. I guess I've gotten too used to the topology of the product being assume to be the zarisky product. Regarding the last comment- nah.. I'll let the OP worry about that. Either he realizes it by himself or he proves that all topological groups are discrete. In my view it's a win-win situation :)
Jul
15
revised Topological group with discrete topology
added 80 characters in body
Jul
15
comment Topological group with discrete topology
Wait, @MartinBrandenburg .. are you sure about that? if you take $G=(\mathbb C,+)$ with the Zarisky topology, then $G$ is a topological group (since multiplication and inversion are polynomial mappings), but $\mathbb C$ is clearly $T_1$ and not $T_2$ with respect to Zarisky topology...
Jul
15
answered Topological group with discrete topology
Jul
15
comment Topological group with discrete topology
Is the group $G$ assume Hausdorff?
Jul
14
revised Involutions of the second type in a division algebra
added 4236 characters in body
Jul
14
asked Involutions of the second type in a division algebra
Jul
2
awarded  Curious
Jun
6
awarded  Popular Question
Apr
5
answered convolution product of characteristic functions
Mar
17
answered Why does this equation holds?