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The propagation of the wave fronts for a class of weakly hyperbolic equations. (English. Russian original) Zbl 0605.35056

Sov. J. Contemp. Math. Anal., Arm. Acad. Sci. 20, No. 1, 51-58 (1985); translation from Izv. Akad. Nauk Arm. SSR, Mat. 20, No. 1, 53-59 (1985).
The paper is devoted to the investigation of the branching of the singularities for a certain class of weakly hyperbolic equations with a degeneracy of a sufficiently general form, admitting a nontrivial factorization. Moreover, one considers both the case of a general powerlike and exponential degeneracies.

MSC:

35L67 Shocks and singularities for hyperbolic equations
35B40 Asymptotic behavior of solutions to PDEs
35L80 Degenerate hyperbolic equations