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  • This session has been presented January 15, 2010.

Description

  • Speaker

    David Gruenewald - Institut Mathématiques de Luminy

In this talk, we present methods for computing Humbert surface equations and isogeny relations using Fourier expansions of Siegel modular forms. Both provide improvements to the running time of the CRT algorithm for computing Igusa class polynomials, which we illuminate with an example.

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