Seminar talk, 7 March 2018

From Geometry of Differential Equations
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Speaker: Valery Yumaguzhin

Title: Quotient Einstein equation

The vacuum Einstein equation on the 4-dimensional oriented manifold is considered. We will construct the quotient of this equation by the action of the pseudogroup of local diffeomorphisms of the manifold. The solutions of the quotient equation are orbits of solutions of the initial Einstein equation with respect to this pseudogroups.