We study the existence and uniqueness of solutions for an analog of the Frankl-type boundary-value problem for a parabolic-hyperbolic-type equation. The uniqueness of the solution is proved by using the principle of extremum, whereas the existence is proved by the method of integral equations.

中文翻译：

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一个混合型退化方程的Frankl型边值问题

我们研究了抛物线-双曲型方程的 Frankl 型边值问题的模拟解的存在性和唯一性。解的唯一性是用极值原理证明的，而存在性是用积分方程的方法证明的。