The number of cubic surfaces with 27 lines over a finite field

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Date

2021

Journal Title

Journal ISSN

Volume Title

Publisher

Springer

Access Rights

info:eu-repo/semantics/closedAccess

Abstract

We determine the number of cubic surfaces with 27 lines over a finite field F-q. This is based on exploiting the relationship between non-conical six-arcs in a projective plane embedded in projective three-space and cubic surfaces with 27 lines. We revisit this classical relationship, which goes back to work of Clebsch in the nineteenth century. Our result can be used as an enumerative check for a computer classification of cubic surfaces with 27 lines over finite fields.

Description

Keywords

Geometry, Cubic surface, Finite field, Counting

Journal or Series

Journal of Algebraic Combinatorics

WoS Q Value

Q3

Scopus Q Value

Q1

Volume

Issue

Citation