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Hypersurfaces in weighted projective spaces over finite fields with applications to coding theory

Y. Aubry,W. Castryck,S. Ghorpade,G. Lachaud,M. O'Sullivan,Samrith Ram

Published 2017 in arXiv.org

ABSTRACT

We consider the question of determining the maximum number of \(\mathbb{F}_{q}\)-rational points that can lie on a hypersurface of a given degree in a weighted projective space over the finite field \(\mathbb{F}_{q}\), or in other words, the maximum number of zeros that a weighted homogeneous polynomial of a given degree can have in the corresponding weighted projective space over \(\mathbb{F}_{q}\). In the case of classical projective spaces, this question has been answered by J.-P. Serre. In the case of weighted projective spaces, we give some conjectures and partial results. Applications to coding theory are included and an appendix providing a brief compendium of results about weighted projective spaces is also included.

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