Representation of solutions of second order one-dimensional model hyperbolic equations

Abstract

We consider second order weakly hyperbolic operators. Some representation formulas are known (see [16]) for the fundamental solution of the initial value problem for the Tricomi-type equation

$$\partial _t^2u - {t^{2\ell }}\partial _x^2u = f\left( {t,x} \right)$$

. In this paper, we solve the initial value problem for

$$\partial _t^2u - {x^{2k}}\partial _x^2u = f\left( {t,x} \right)\;and\;\partial _t^2u - {e^{2kx}}\partial _x^2u = f\left( {t,x} \right)$$

. Furthermore, we solve the mixed initial boundary value problem for

$$\partial _t^2u - {t^{2\ell }}{x^{2k}}\partial _x^2u = 0$$

.

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Galstian, A., Kinoshita, T. Representation of solutions of second order one-dimensional model hyperbolic equations. JAMA 130, 355–374 (2016). https://doi.org/10.1007/s11854-016-0040-x

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