Abstract
In this article, the lines not meeting a quadric cone in ( odd) are characterised by their intersection properties with points and planes.
Citation
Susan G. Barwick. David K. Butler. "A characterisation of the lines external to a quadric cone of $\mathsf{PG}(3,q)$, $q$ odd." Innov. Incidence Geom. 8 39 - 48, 2008. https://doi.org/10.2140/iig.2008.8.39
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