The Hessian Discriminant

Rodica Dinu; Tim Seynnaeve

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arXiv · 1909.06681

The Hessian Discriminant

Rodica Dinu·Tim Seynnaeve

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Abstract

We express the Hessian discriminant of a cubic surface in terms of fundamental invariants. This answers Question 15 from the \emph{27 questions on the cubic surface}. We also explain how to compute the fundamental invariants for smooth cubics of rank 6.

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Rodica Dinu, Tim Seynnaeve. 2019-09-14. The Hessian Discriminant. https://arxiv.org/abs/1909.06681

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