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A Sharp Decay Estimate for Positive Nonlinear Waves

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 Publication date 2003
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and research's language is English




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We consider a strictly hyperbolic, genuinely nonlinear system of conservation laws in one space dimension. A sharp decay estimate is proved for the positive waves in an entropy weak solution. The result is stated in terms of a partial ordering among positive measures, using symmetric rearrangements and a comparison with a solution of Burgers equation with impulsive sources.



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