# Strictly pseudoconvex domains in C^2 with obstruction flat boundary

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A bounded strictly pseudoconvex domain in C^n, n>1, supports a

unique complete Kahler-Einstein metric determined by the Cheng-Yau solution

of Fefferman's Monge-Ampere equation. The smoothness of the solution of

Fefferman's equation up to the boundary is obstructed by a local CR

invariant of the boundary called the obstruction density. In the case n=2

the obstruction density is especially important, in particular in describing

the logarithmic singularity of the Bergman kernel. For domains in C^2

diffeomorphic to the ball, we motivate and consider the problem of

determining whether the global vanishing of this obstruction implies

biholomorphic equivalence to the unit ball. (This is a strong form of the

Ramadanov Conjecture.)