Log canonical thresholds on Gorenstein canonical del Pezzo surfaces
arXiv:0904.4513 · doi:10.1017/S001309150900039X
Abstract
We classify all the effective anticanonical divisors on weak del Pezzo surfaces. Through this classification we obtain the smallest number among the log canonical thresholds of effective anticanonical divisors on a given Gorenstein canonical del Pezzo surface.
28 pages. Minor mistakes have been corrected