 Segre embedding

The Segre embedding sendsand realizes ${\mathbb{P}}^m\times {\mathbb{P}}^n$ as a projective variety.

The Segre embedding is a mathematical construction that allows one to embed the Cartesian product of two projective spaces into a higher-dimensional projective space. Named after the Italian mathematician Francesco Segre, this embedding is particularly important in algebraic geometry and related fields.