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math.AG2000
Towards the ample cone of $\mgn$
Angela Gibney, Sean Keel, Ian Morrison
In this paper we study the ample cone of the moduli space $\mgn$ of stable -pointed curves of genus . Our motivating conjecture is that a divisor on $\mgn$ is ample iff it ha…
math.AG2000
Mori Dream Spaces and GIT
Yi Hu, Sean Keel
The main goal of this paper is to study varieties with the best possible Mori theoretic properties (measured by the existence of a certain decomposition of the cone of effective di…