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Regularity of almost extremal solutions of Monge–Ampère equations

Published online by Cambridge University Press:  14 November 2011

John I. E. Urbas
Affiliation:
Centre for Mathematical Analysis, Australian National University, GPO Box 4, Canberra ACT 2601, Australia

Synopsis

We show that for a large class of Monge-Ampère equations, generalised solutions on a uniformly convex domain Ω⊂ℝn are classical solutions on any pre-assigned subdomain Ω′⋐Ω, provided the solution is almost extremal in a suitable sense. Alternatively, classical regularity holds on subdomains of Ω which are sufficiently distant from ∂Ω. We also show that classical regularity may fail to hold near ∂Ω in the nonextremal case. The main example of the class of equations considered is the equation of prescribed Gauss curvature.

Type
Research Article
Copyright
Copyright © Royal Society of Edinburgh 1991

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