Abstract
We give a complete classification of umbilical surfaces of arbitrary codimension of a product $\mathbb{Q}_{k_1}^{n_1}\times \mathbb{Q}_{k_2}^{n_2}$ of space forms whose curvatures satisfy $k_1+k_2\neq 0$.
Citation
Jaime Orjuela. Ruy Tojeiro. "Umbilical surfaces of products of space forms." Tohoku Math. J. (2) 68 (3) 471 - 486, 2016. https://doi.org/10.2748/tmj/1474652269
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