Document Type


Date of Degree

Spring 2010

Degree Name

PhD (Doctor of Philosophy)

Degree In


First Advisor

Hao Fang

First Committee Member

Charles Frohman

Second Committee Member

Oguz Durumeric

Third Committee Member

Walter Seaman

Fourth Committee Member

Kasturi Varadarajan


In the context of moment maps and diffeomorphisms of Kähler manifolds, Donaldson introduced a fully nonlinear Monge-Ampère type equation. Among the conjectures he made about this equation is that the existence of solutions is equivalent to a positivity condition on the initial data. Weinkove later affirmed Donaldson's conjecture using a gradient flow for the equation in the space of Kähler potentials of the initial data. The topic of this thesis is the case when the initial data is merely semipositive and the domain is a closed Kähler surface. Regularity techniques for degenerate Monge-Ampère equations, specifically those coming from pluripotential theory, are used to prove the existence of a bounded, unique, weak solution. With the aid of a Nakai criterion, due to Lamari and Buchdahl, it is shown that this solution is smooth away from some curves of negative self-intersection.


Degenerate Monge-Ampère Equations, Geometric Analysis, Kähler Geometry, Pluripotential Theory


1, iii, 74 pages


Includes bibliographical references (pages 72-74).


Copyright 2010 Arvind Satya Rao

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