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gr-qc2004
Symmetric hyperbolicity and consistent boundary conditions for second-order Einstein equations
Carsten Gundlach, Jose M. Martin-Garcia
We present two families of first-order in time and second-order in space formulations of the Einstein equations (variants of the Arnowitt-Deser-Misner formulation) that admit a com…
gr-qc2004
Symmetric hyperbolic form of systems of second-order evolution equations subject to constraints
Carsten Gundlach, Jose M. Martin-Garcia
Motivated by the initial-boundary value problem for the Einstein equations, we propose a definition of symmetric hyperbolicity for systems of evolution equations that are first ord…