TY - JOUR T1 - A Note on Obata Equations on Manifolds with Boundary AU - Lai , Mijia AU - Zhou , Huihuang JO - Journal of Mathematical Study VL - 3 SP - 242 EP - 253 PY - 2022 DA - 2022/09 SN - 55 DO - http://doi.org/10.4208/jms.v55n3.22.02 UR - https://global-sci.org/intro/article_detail/jms/20974.html KW - Obata type equation, manifolds with boundary, Dupin hypersurfaces. AB -

We analyze complete manifolds with boundary which admit solutions to Obata type equations $\nabla^2 f- fg=0$ and $\nabla^2 f=g$ under various boundary conditions. Given the existence of interior critical points, such manifolds are domains in the hyperbolic space and the Euclidean space respectively.