Please use this identifier to cite or link to this item: http://hdl.handle.net/10525/411

 Title: Strichartz Type Estimates for Oscillatory Problems for Semilinear Wave Equation Authors: Di Pomponio, Stefania Keywords: Semilinear Wave EquationStrichartz Estimate Issue Date: 2000 Publisher: Institute of Mathematics and Informatics Citation: Serdica Mathematical Journal, Vol. 26, No 2, (2000), 127p-144p Abstract: We treat the oscillatory problem for semilinear wave equation. The oscillatory initial data are of the type u(0, x) = h(x) + ε^(σ+1) * e^(il(x)/ε) * b0 (ε, x) ∂t u(0, x) = ε^σ * e^(il(x)/ε) * b1(ε, x). By using suitable variants of Strichartz estimate we extend the results from [6] on a priori estimates of the approximations of geometric optics.The main improvement is the fact that we can obtain a priori estimates for the case σ = 1, while in [6] we could treat only the case σ > n/2 − 1. Description: The author is partially supported by: M. U. R. S. T. Prog. Nazionale “Problemi e Metodi nella Teoria delle Equazioni Iperboliche”. URI: http://hdl.handle.net/10525/411 ISSN: 1310-6600 Appears in Collections: Volume 26 Number 2

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