A new geometric approach to problems in birational geometry
Abstract
A classical set of birational invariants of a variety are its spaces of pluricanonical forms and some of their canonically defined subspaces. Each of these vector spaces admits a typical metric structure which is also birationally invariant. These vector spaces so metrized will be referred to as the pseudonormed spaces of the original varieties. A fundamental question is the following: given two mildly singular projective varieties with some of the first variety's pseudonormed spaces being isometric to the corresponding ones of the second variety's, can one construct a birational map between them which induces these isometries? In this work a positive answer to this question is given for varieties of general type. This can be thought of as a theorem of Torelli type for birational equivalence.
Cite
@article{arxiv.0811.2965,
title = {A new geometric approach to problems in birational geometry},
author = {Chen-Yu Chi and Shing-Tung Yau},
journal= {arXiv preprint arXiv:0811.2965},
year = {2009}
}
Comments
13 pages, to appear in PNAS