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math-ph1999
Evolution, its Fractional Extension and Generalization
Michelle M. Wyss, Walter Wyss
The evolution of a quantity, described by a function of space and time, relates the first derivative in time of this function to a spatial operator applied to the function. The ini…
math-ph1999
The Energy-Momentum Tensor for Gravitational Interactions
Walter Wyss
Within the Lagrange formalism we show that the gauge invariant total energy-momentum tensor for gravitational interactions is zero. If the equations of motion are satisfied the ene…