On Morrison's cone conjecture for klt sufaces with $K_X\simeq 0$

Abstract

This paper considers normal projective complex surface X with at worst Kawamata log terminal singularities and K_X is numerically trivial. The aim is to prove that there is a finite rational polyhedral cone which is a fundamental domain for the action Aut(X) on the rational convex hull of its ample cone.

8 pages, LaTeX Several grammatical mistakes are corrected