Results 21 to 30 of about 158 (51)

Frobenius difference equations and algebraic independence of zeta values in positive equal characteristic

open access: yes, 2009
In analogy with the Riemann zeta function at positive integers, for each finite field F_p^r with fixed characteristic p we consider Carlitz zeta values zeta_r(n) at positive integers n. Our theorem asserts that among the zeta values in {zeta_r(1), zeta_r(
Chieh-Yu Chang   +4 more
core   +1 more source

Explicit L-functions and a Brauer-Siegel theorem for Hessian elliptic curves [PDF]

open access: yes, 2017
For a finite field $\mathbb{F}_q$ of characteristic $p\geq 5$ and $K=\mathbb{F}_q(t)$, we consider the family of elliptic curves $E_d$ over $K$ given by $y^2+xy - t^dy=x^3$ for all integers $d$ coprime to $q$. We provide an explicit expression for the $L$
Griffon, Richard
core   +3 more sources

Smooth hypersurface sections containing a given subscheme over a finite field

open access: yes, 2008
We use the "closed point sieve" to prove a variant of a Bertini theorem over finite fields. Specifically, given a smooth quasi-projective subscheme X of P^n of dimension m over F_q, and a closed subscheme Z in P^n such that Z intersect X is smooth of ...
Poonen, Bjorn
core   +1 more source

Explicit Formulae for $L$-values in Positive Characteristic [PDF]

open access: yes, 2014
We focus on the generating series for the rational special values of Pellarin's $L$-series in $1 \leq s \leq 2(q-1)$ indeterminates, and using interpolation polynomials we prove a closed form formula relating this generating series to the Carlitz ...
Perkins, Rudolph Bronson
core   +1 more source

Newton Polygons of Cyclic Covers of the Projective Line Branched at Three Points [PDF]

open access: yes, 2019
We review the Shimura–Taniyama method for computing the Newton polygon of an abelian variety with complex multiplication. We apply this method to cyclic covers of the projective line branched at three points.
Li, Wanlin   +3 more
core   +1 more source

A Generic Approach to Searching for Jacobians

open access: yes, 2007
We consider the problem of finding cryptographically suitable Jacobians. By applying a probabilistic generic algorithm to compute the zeta functions of low genus curves drawn from an arbitrary family, we can search for Jacobians containing a large ...
Sutherland, Andrew V.
core   +3 more sources

Hypergeometric L-functions in average polynomial time

open access: yes, 2020
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 $X$.
Costa, Edgar   +2 more
core  

Linear relations among double zeta values in positive characteristic

open access: yes, 2016
The study of this paper is inspired by the conjecture of Zagier on the explicit dimension formula for the space of the same weight double zeta values in terms of the dimension of cusp forms for SL_{2}(Z).
Chang, Chieh-Yu
core   +1 more source

Generic Newton polygons for curves of given p-rank [PDF]

open access: yes, 2013
We survey results and open questions about the $p$-ranks and Newton polygons of Jacobians of curves in positive characteristic $p$. We prove some geometric results about the $p$-rank stratification of the moduli space of (hyperelliptic) curves.
Achter, Jeff, Pries, Rachel
core  

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