Polarized rigid del Pezzo surfaces in low codimension
Abstract
We provide explicit graded constructions of orbifold del Pezzo surfaces with rigid orbifold points of type ; as well-formed and quasismooth varieties embedded in some weighted projective space. In particular, we present a collection of 147 such surfaces such that their image under their anti-canonical embeddings can be described by using one of the following sets of equations: a single equation, two linearly independent equations, five maximal Pfaffians of skew symmetric matrix, and nine minors of size 3 square matrix. This is a complete classification of such surfaces under certain carefully chosen bounds on the weights of ambient weighted projective spaces and it is largely based on detailed computer-assisted searches by using the computer algebra system \textsc{magma}.
Cite
@article{arxiv.2005.01041,
title = {Polarized rigid del Pezzo surfaces in low codimension},
author = {Muhammad Imran Qureshi},
journal= {arXiv preprint arXiv:2005.01041},
year = {2020}
}
Comments
22 pages, 5 tables, An improved version after a referee's comments