Opuscula Mathematica (Jan 2014)

Existence and regularity of solutions for hyperbolic functional differential problems

  • Zdzisław Kamont

DOI
https://doi.org/10.7494/OpMath.2014.34.2.217
Journal volume & issue
Vol. 34, no. 2
pp. 217 – 242

Abstract

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A generalized Cauchy problem for quasilinear hyperbolic functional differential systems is considered. A theorem on the local existence of weak solutions is proved. The initial problem is transformed into a system of functional integral equations for an unknown function and for their partial derivatives with respect to spatial variables. The existence of solutions for this system is proved by using a method of successive approximations. We show a theorem on the differentiability of solutions with respect to initial functions which is the main result of the paper.

Keywords