Geography of Gorenstein stable log surfaces
arXiv:1307.1999
Abstract
We study the geography of Gorenstein stable log surfaces and prove two inequalities for their invariants: the stable Noether inequality and the -inequality. By constructing examples we show that all invariants are realised except possibly some cases where the inequalities become equalities.
25 page, 10 figures; v2: minor changes, to appear in TAMS