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On the Stability of the Notion of Non-Characteristic Point and Blow-Up Profile for Semilinear Wave Equations

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Abstract

We consider a blow-up solution for the semilinear wave equation in N dimensions, with subconformal power nonlinearity. Introducing \({\mathcal{R}_0}\) the set of non-characteristic points with the Lorentz transform of the space-independent solution as asymptotic profile, we show that \({\mathcal{R}_0}\) is open and that the blow-up surface is of class C 1 on \({\mathcal{R}_0}\) . Then, we show the stability of \({\mathcal{R}_0}\) with respect to initial data.

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Correspondence to Hatem Zaag.

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Communicated by W. Schlag

Both authors are supported by the ERC Advanced Grant no. 291214, BLOWDISOL. H.Z. is partially supported by ANR project ANAÉ ref. ANR-13-BS01-0010-03.

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Merle, F., Zaag, H. On the Stability of the Notion of Non-Characteristic Point and Blow-Up Profile for Semilinear Wave Equations. Commun. Math. Phys. 333, 1529–1562 (2015). https://doi.org/10.1007/s00220-014-2132-8

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  • DOI: https://doi.org/10.1007/s00220-014-2132-8

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