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Asymptotics from scaling for nonlinear wave equations
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We present a scaling technique which transforms the evolution problem for a nonlinear wave equation with small initial data to a linear wave equation with a distributional source. The exact solution of the latter uniformly approximates the late-time behavior of solutions of the nonlinear problem in timelike and null directions.
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Semilinear wave equations in homothetic hyperboloidal coordinates and tail decay
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