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Matrix of Frobenius action on the de Rham cohomology of a curve.

asked 2011-04-18 12:58:19 -0600

Mike gravatar image

updated 2015-01-13 11:10:15 -0600

FrédéricC gravatar image

I'd like to be able to compute the matrix of Frobenius action on the de Rham cohomology of a curve in characteristic p. Has this been implemented in SAGE?

I couldn't find anything in the documentation, or googling for papers which compute this. Also, computation of the Hasse Witt Matrix has been implemented.

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answered 2013-12-15 00:35:29 -0600

John Cremona gravatar image

See this section of the reference manual but note that it says "Currently this code is limited to the case p?5 (no GF(pn) for n>1), and only handles the elliptic curve case (not more general hyperelliptic curves)."

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Asked: 2011-04-18 12:58:19 -0600

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Last updated: Dec 15 '13