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

asked 13 years ago

Mike gravatar image

updated 10 years ago

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 11 years ago

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: 13 years ago

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Last updated: Dec 15 '13