We study real Hurwitz numbers enumerating real meromorphic functions of a special kind, referred to as framed purely real functions. We deduce partial differential equations of cut-and-join type for the generating functions for these numbers. We also construct a topological field theory for them.

中文翻译：

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关于带框的简单纯实 Hurwitz 数

我们研究枚举一种特殊类型的实亚纯函数的实 Hurwitz 数，称为框架纯实函数。我们为这些数字的生成函数推导出切合类型的偏微分方程。我们还为它们构建了一个拓扑场论。