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Jul 5, 2017 at 15:18 answer added David Loeffler timeline score: 2
Jun 26, 2016 at 15:31 vote accept David Loeffler
Jun 26, 2016 at 4:02 answer added user94346 timeline score: 3
Jun 24, 2016 at 8:08 comment added David Loeffler No. If $f$ has parallel weight 2 and is associated to a modular elliptic curve $E / L$, then $f^\sigma$ is associated to $E^\sigma / L$ (the curve obtained by acting by $\sigma$ on the coefficients of a Weierstrass equation for $E$), and $E^\sigma$ is not usually isomorphic (or even isogenous) to $E$.
Jun 24, 2016 at 7:11 comment added Kimball So is $f_\sigma$ just obtained from $f$ by permuting the weights? In particular, if $f$ is a parallel weight form, $f_\sigma = f$?
Jun 23, 2016 at 20:05 history edited Peter Humphries CC BY-SA 3.0
fixed missing $\sigma$
Jun 23, 2016 at 19:20 history edited David Loeffler CC BY-SA 3.0
added 14 characters in body
Jun 23, 2016 at 10:40 history edited David Loeffler CC BY-SA 3.0
added 26 characters in body
Jun 23, 2016 at 8:31 history asked David Loeffler CC BY-SA 3.0