Prigmin Smith
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 Feb 29 awarded Popular Question 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