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Hypergeometric L-functions in average polynomial time

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arxiv 2005.13640 v4 pith:I2SH3IQK submitted 2020-05-27 math.NT

Hypergeometric L-functions in average polynomial time

classification math.NT
keywords timeaveragehypergeometricpolynomialtracealgorithmbeukers--cohen--mellitcombines
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We describe an algorithm for computing, for all primes $p \leq X$, the mod-$p$ reduction of the trace of Frobenius at $p$ of a fixed hypergeometric motive in time quasilinear in $X$. This combines the Beukers--Cohen--Mellit trace formula with average polynomial time techniques of Harvey et al.

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