Hostname: page-component-78c5997874-s2hrs Total loading time: 0 Render date: 2024-11-19T23:00:11.230Z Has data issue: false hasContentIssue false

Small Zeros of Quadratic Forms Avoiding a Finite Number of Prescribed Hyperplanes

Published online by Cambridge University Press:  20 November 2018

Rainer Dietmann*
Affiliation:
Institut für Algebra und Zahlentheorie, Pfaffenwaldring 57, D-70550 Stuttgart, Germany e-mail: [email protected]
Rights & Permissions [Opens in a new window]

Abstract

Core share and HTML view are not available for this content. However, as you have access to this content, a full PDF is available via the ‘Save PDF’ action button.

We prove a new upper bound for the smallest zero $x$ of a quadratic form over a number field with the additional restriction that $x$ does not lie in a finite number of $m$ prescribed hyperplanes. Our bound is polynomial in the height of the quadratic form, with an exponent depending only on the number of variables but not on $m$.

Type
Research Article
Copyright
Copyright © Canadian Mathematical Society 2009

References

[1] Bombieri, E. and Vaaler, J., On Siegel's lemma. Invent. Math. 73(1983), no. 1, 1132.Google Scholar
[2] Cassels, J. W. S., Bounds for the least solutions of homogeneous quadratic equations. Proc. Cambridge Philos. Soc. 51(1955), 262264.Google Scholar
[3] Cassels, J. W. S., Rational quadratic forms. London Mathematical SocietyMonographs 13, Academic Press, London-New York, 1978.Google Scholar
[4] Fukshansky, L., Small zeros of quadratic forms with linear conditions. J. Number Theory 108(2004), no. 1, 2943.Google Scholar
[5] Lang, S., Fundamentals of Diophantine geometry. Springer-Verlag, New York, 1983.Google Scholar
[6] Masser, D. W., How to solve a quadratic equation in rationals. Bull. London Math. Soc. 30(1998), no. 1, 2428.Google Scholar
[7] Vaaler, J. D., Small zeros of quadratic forms over number fields. Trans. Amer. Math. Soc. 302(1987), no. 1, 281296.Google Scholar