Seifert–Weber space

The Seifert-Weber space is a specific type of 3-manifold that can be constructed as a nontrivial example of a Seifert fibered space. It is particularly known for its interesting topological properties. In simpler terms, a Seifert fibered space is a 3-manifold that can be decomposed into a collection of circles (fibers) such that around each fiber, there is a well-defined surface that varies continuously.