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6 votes
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Why are the $p$-adic $L$-functions for a modular form with $a_p=0$ conjugates?

I have a question about the proof of Theorem 3.5 in Pollack's 2003 paper On the $p$-adic L-function of a Modular Form at a Supersingular Prime. The setup is as follows. Fix an eigenform $f\in S_k(N,\...
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4 votes
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Sign error in $\pm$-parts of modular symbols?

I am trying to connect the definition of $\pm$-modular symbols given in [Pollack, pg. 529] and [MTT,pg. 11] to those appearing in [Greenberg-Stevens, pg. 200 in #20 here], but I can't seem to ...
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