We study some qualitative properties of ancient solutions of superlinear heat equations on a Riemannian manifold, with particular interest in positivity and constancy in space.

中文翻译：

---

黎曼流形上超线性热方程的古代解

我们研究了黎曼流形上超线性热方程的古代解的一些定性性质，对空间中的正性和恒定性特别感兴趣。