Cover: Material Momentum-Energy Tensors and the Calculus of Variations.

Material Momentum-Energy Tensors and the Calculus of Variations.

Published 1964

by Dominic G. B. Edelen

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A Memorandum demonstrating that, if the Einstein field equations of general relativity are derived from a homogeneous variational principle, then the dynamical processes of the space are intrinsically reversible. As an application, it is shown that an isolated world tube of perfect fluid contains a geodesic stream line, provided the field equations are derived from a variational principle. 18 pp

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