R 3 will be orientable in the sense if and only if it is orientable as an abstract surface. Contents 1 Oriented vs. orie...
A compact manifold means a "manifold" that is compact as a topological space, but possibly has boundary. More ...
Kähler manifold with a holomorphic volume form is a Calabi–Yau manifold . Contents 1 Definition 2 Orientation 3 Rel...
In geometry , a spin structure is an additional piece of data which can sometimes be specified on a vector bundle over a...
Handlebody - Wikipedia, the free encyclopedia Handlebody From Wikipedia, the free encyclopedia Jump to: navigation , sea...
Dehn twist - Wikipedia, the free encyclopedia Dehn twist From Wikipedia, the free encyclopedia Jump to: navigation , sea...
Pontryagin classes. [ edit ] Pontryagin numbers Pontryagin numbers are certain topological invariants of a smooth manifo...