Geodesic
Wave fronts of solutions of some classes of non-linear partial differential equations
Banach Center Publications, Tome 27 (1992) no. 2, pp. 361-366.

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1. This paper is devoted to the study of wave fronts of solutions of first order symmetric systems of non-linear partial differential equations. A short communication was published in [4]. The microlocal point of view enables us to obtain more precise information concerning the smoothness of solutions of symmetric hyperbolic systems. Our main result is a generalization to the non-linear case of Theorem 1.1 of Ivriĭ [3]. The machinery of paradifferential operators introduced by Bony [1] together with an idea coming from [3], [2] are used.
DOI : 10.4064/-27-2-361-366

P. Popivanov 1

1 
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P. Popivanov. Wave fronts of solutions of some classes of non-linear partial differential equations. Banach Center Publications, Tome 27 (1992) no. 2, pp. 361-366. doi : 10.4064/-27-2-361-366. http://geodesic.mathdoc.fr/articles/10.4064/-27-2-361-366/

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