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 Jul 2 awarded Curious May 6 comment Lecture notes for measure theoretic probability theory I second this response Mar 11 awarded Critic Mar 11 accepted Power series centered at $x =0$ Mar 11 comment Power series centered at $x =0$ Good job. Thank you for the bright idea Mar 11 awarded Citizen Patrol Mar 11 asked Power series centered at $x =0$ Dec 3 accepted find F'(x) for the given F(x) Dec 3 asked find F'(x) for the given F(x) Oct 12 comment What can conclude about $[G:H]$? @ Arthur: I'm trying to use these equivalent statements to prove that the coset of H is only the identity. Oct 12 comment What can conclude about $[G:H]$? can we have $[G:H] \geq n$ where $n = |G|$ ? Oct 12 comment What can conclude about $[G:H]$? @ Arthur: The theory at hand says "if H is a subgroup of a group G, and a,b \in G, then the following four conditions are equivalent: 1- $ab^-1 \in H$ 2- $a = hb$ for some $h \in H$ 3- $a \in Hb$ 4- $Ha = Hb$ As a consequence, the right coset of $H$ to wich a belongs is $Ha$ Oct 12 comment What can conclude about $[G:H]$? @ Alex Kruckman: I meant to specify the elements that exist in the coset Oct 12 comment What can conclude about $[G:H]$? @ Arthur: $a, b \in G$ Oct 12 asked What can conclude about $[G:H]$? Oct 12 awarded Custodian Oct 12 reviewed Approve Find the number of cosets$[G:H]$? Oct 12 comment Find the number of cosets$[G:H]$? @ T.Bongers: Thank you so much for the help. I really appreciate it. You review saved me some terrific future mistakes Oct 12 comment Find the number of cosets$[G:H]$? @ T.Bongers : I have to delete my answer. Oct 12 accepted Find the number of cosets$[G:H]$?