On H. Friedrich's formulation of the Einstein equations with fluid sources

Yvonne Choquet-Bruchat, James W. York

DOI: http://dx.doi.org/10.12775/TMNA.2001.037

Abstract


We establish a variant of the symmetric quasi linear first order system
given by H. Friedrich for the evolution equations of gravitating fluid
bodies in General Relativity which can be important to solve realistic
problems. Our version has the advantage of introducing only physical
characteristics. We state explicitly the conditions under which the system
is hyperbolic and admits a well posed Cauchy problem.

Keywords


Einstein relativity; fluids

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