A note on the projective varieties of almost general type
Abstract
A -Cartier divisor on a projective variety is {\it almost nup}, if for every very general curve on . An algebraic variety is of {\it almost general type}, if there exists a projective variety with only terminal singularities such that the canonical divisor is almost nup and such that is birationally equivalent to . We prove that a complex algebraic variety is of almost general type if and only if it is neither uniruled nor covered by any family of varieties being birationally equivalent to minimal varieties with numerically trivial canonical divisors, under the minimal model conjecture. Furthermore we prove that, for a projective variety with only terminal singularities, is of almost general type if and only if the canonical divisor is almost nup, under the minimal model conjecture.
Cite
@article{arxiv.math/0506132,
title = {A note on the projective varieties of almost general type},
author = {Shigetaka Fukuda},
journal= {arXiv preprint arXiv:math/0506132},
year = {2010}
}
Comments
11 pages, LaTeX2e; The published version