Pfaffian representations of cubic surfaces

Abstract

Let K be a field of characteristic zero. We describe an algorithm which requires a homogeneous polynomial F of degree three in K[x_0,x_1,x_2,x_3] and a zero A of F in P^3_K and ensures a linear pfaffian representation of V(F) with entries in K[x_0,x_1,x_2,x_3], under mild assumptions on F and A. We use this result to give an explicit construction of (and to prove the existence of) a linear pfaffian representation of V(F), with entries in K'[x_0,x_1,x_2,x_3], being K' an algebraic extension of K of degree at most six. An explicit example of such a construction is given.

arXiv comment17 pages. Expanded with some remarks. Published with minor corrections in Geom. Dedicata

References in corpus (1)

• Pfaffian bundles on cubic surfaces and configurations of planes

Cited by in corpus (2)

• The Cohen-Macaulay representation type of arithmetically Cohen-Macaulay varieties
• Pfaffian bundles on cubic surfaces and configurations of planes