177 reputation
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age 24
visits member for 3 years, 3 months
seen Oct 8 '11 at 13:01

Jul
2
awarded  Curious
Oct
7
accepted generating functions and the sequence $x_{n+1}=x_{n}+\frac{1}{x_{n}}$
Oct
7
accepted Rearrangements of a conditionally convergent series
Oct
4
accepted What is required to learn about algebraic geometry?
Oct
4
asked What is required to learn about algebraic geometry?
Oct
1
accepted What exactly is “formal language theory”?
Sep
30
asked What exactly is “formal language theory”?
Sep
27
comment How to prove the linear dependence of these elements?
Thanks to you ...
Sep
27
accepted How to prove the linear dependence of these elements?
Sep
26
asked How to prove the linear dependence of these elements?
Sep
23
accepted Combinatorial proof for two identities
Sep
23
asked Combinatorial proof for two identities
Sep
20
accepted Generating function of $a_{n}^2$ in terms of GF of $a_{n}$?
Sep
20
asked Generating function of $a_{n}^2$ in terms of GF of $a_{n}$?
Sep
19
awarded  Scholar
Sep
19
accepted what is exactly the index of a subgroup?
Sep
19
comment what is exactly the index of a subgroup?
Thanks to you, i've got it .
Sep
19
comment what is exactly the index of a subgroup?
then , as i understand , if we have $gH = g'H$ while $g$' is different from $g$ , we just consider one of those two sets when counting all cosets ?
Sep
19
revised what is exactly the index of a subgroup?
edited body; edited title
Sep
19
asked what is exactly the index of a subgroup?