Characterization of hypersurfaces in four dimensional product spaces via two different Spin${}^c$ structures

Roger Nakad, Julien Roth

The Riemannian product ${\mathbb{M}}_1(c_1)\times {\mathbb{M}}_2(c_2)$, where ${\mathbb{M}}_i(c_i)$ denotes the $2$-dimensional space form of constant sectional curvature $c_i \in \mathbb…