Weighted L2-Estimates of Solutions for Damped Wave Equations with Variable Coefficients

YAO Pengfei,ZHANG Zhifei

Journal of Systems Science & Complexity ›› 2017, Vol. 30 ›› Issue (6) : 1270-1292.

PDF(286 KB)
PDF(286 KB)
Journal of Systems Science & Complexity ›› 2017, Vol. 30 ›› Issue (6) : 1270-1292. DOI: 10.1007/s11424-017-6093-9

Weighted L2-Estimates of Solutions for Damped Wave Equations with Variable Coefficients

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Abstract

The authors establish weighted L2-estimates of solutions for the damped wave equations with variable coefficients utt− divA(x)∇u+aut = 0 in IRn under the assumption a(x) ≥ a0[1+ρ(x)] −l, where a0 > 0, l < 1, ρ(x) is the distance function of the metric g = A −1(x) on IRn. The authors show that these weighted L2-estimates are closely related to the geometrical properties of the metric g = A −1(x).

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YAO Pengfei , ZHANG Zhifei. Weighted L2-Estimates of Solutions for Damped Wave Equations with Variable Coefficients. Journal of Systems Science and Complexity, 2017, 30(6): 1270-1292 https://doi.org/10.1007/s11424-017-6093-9
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