Virtual Talk: On the characteristic gluing problem

Igor Rodnianski
Princeton University

I will discuss recent joint work with S. Aretakis and S. Czimek where we studied the problem of gluing together two sets of characteristic data for solutions of the Einstein vacuum equations. This is the null analog of the Riemannian problem in which a similar question is investigated for the solutions of the space-like constraint equations.
The former problem turns out to of a different nature and, interestingly enough, has application to the latter.

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