Jeff H
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 Apr 15 comment Congruence Primes and Modular Degrees Perfect, thank you! Apr 15 accepted Congruence Primes and Modular Degrees Apr 15 awarded Popular Question Apr 15 awarded Yearling Apr 14 asked Congruence Primes and Modular Degrees Apr 11 comment Undergraduate ODE textbook following Rota @MarkMeckes I've not been misled about anything, but thanks for your concern. Apr 11 comment Undergraduate ODE textbook following Rota @L Spice: There are many questions regarding textbook recommendations on this site. (Notice the last tag on my post.) Apr 9 awarded Good Question Apr 8 awarded Nice Question Apr 8 asked Undergraduate ODE textbook following Rota Aug 6 accepted Congruence Number of 197A1 Aug 6 comment Congruence Number of 197A1 @ABCDveve If you ask LMFDB for elliptic curves of conductor 197, there is exactly one. Aug 5 comment Congruence Number of 197A1 Or I can delete this question and pretend I never asked it ;) Aug 5 comment Congruence Number of 197A1 @JeremyRouse Oh, of course! What a silly mistake on my part. If you'd like to elevate your comment to an answer, I'd be happy to accept it. Aug 5 revised Congruence Number of 197A1 left out the important qualification that g must be an eigenform Aug 5 asked Congruence Number of 197A1 Jun 23 comment Hodgeâ€“Tate structures of modular forms In the ordinary case, page 164 of Mazur's "Infinite fern" paper sketches a way to see this, provided you already know that the determinant of the representation is $\chi \epsilon_{p}^{k+1}$. May 27 accepted Level-Lowering in Weight 2 May 27 answered Level-Lowering in Weight 2 May 24 comment Level-Lowering in Weight 2 The assumption that rhobar is finite flat is equivalent to it being peu (and not tres) ramifie