Birational geometry of Calabi-Yau pairs $({\mathbb{P}}^3,D)$ of coregularity 2

Abstract

This paper aims to study the birational geometry of log Calabi-Yau pairs$({\mathbb{P}}^3,D)$ of coregularity 2, where in this case $D$ is an irreducible normal quartic surface with canonical singularities. We completely classify which toric weighted blowups of a point will initiate a volume preserving Sarkisov link starting with this pair. Depending on the type of singularity, our results point out that some of these weights do not work generically for a general member of the corresponding coarse moduli space of quartics.

40 pages, 4 figures. Derived from the PhD thesis of the author. Comments are very welcome!