2012
DOI: 10.1016/j.jnt.2012.02.010
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Counting rational points on smooth cyclic covers

Abstract: A conjecture of Serre concerns the number of rational points of bounded height on a finite cover of projective space P n−1 . In this paper, we achieve Serre's conjecture in the special case of smooth cyclic covers of any degree when n ≥ 10, and surpass it for covers of degree r ≥ 3 when n > 10. This is achieved by a new bound for the number of perfect r-th power values of a polynomial with nonsingular leading form, obtained via a combination of an r-th power sieve and the q-analogue of van der Corput's method.

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Cited by 15 publications
(19 citation statements)
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“…Later, T. D Browning [3] developed the polynomial sieve which extends both the square sieve of D. R. Heath-Brown and d-power sieve of R. Munshi. In [8], D. R. Heath-Brown and L. Pierce improved results of R. Munshi [11] for n ≥ 8.…”
Section: Introductionmentioning
confidence: 92%
“…Later, T. D Browning [3] developed the polynomial sieve which extends both the square sieve of D. R. Heath-Brown and d-power sieve of R. Munshi. In [8], D. R. Heath-Brown and L. Pierce improved results of R. Munshi [11] for n ≥ 8.…”
Section: Introductionmentioning
confidence: 92%
“…• Pierce [Pi06] introduced the ideas of q-vdC to the square sieve of Heath-Brown, which enables her to derive the first non-trivial bound for the 3torsion of the class group of Q( √ −D). In their joint work on a conjecture of Serre concerning the number of rational points of bounded height on a finite cover of projective space P n−1 , Heath-Brown and Pierce [HBP12] can succeed in the special case of smooth cyclic covers of large degrees invoking the ideas of q-vdC to the power sieve.…”
Section: Definition 23 (Fourier Sheaf)mentioning
confidence: 99%
“…Our proof of Theorem 1.1 relies on a variant of the square sieve worked out by Pierce [15], which allows for an application of Heath-Brown's q-analogue of van der Corput differencing. This approach was already put to use by Heath-Brown and Pierce [8] to study cyclic covers of P n and our proof is inspired by their work. Ultimately, for suitable primes p, the proof of Theorem 1.1 is reduced to estimating a certain 4-variable exponential sum W p = W p (λ, h, µ) defined over F p .…”
Section: Introductionmentioning
confidence: 99%