Hakuluettelo:
Käännös:
Poincaré space (suomeksi)
- Määritelmät:
- (lb, en, topology) An ''n''-dimensional topological space with a distinguished element ''µ'' of its ''n''th homology group such that taking the cap product with an element of the ''k''th cohomology group yields an isomorphism to the (''n'' − ''k'')th cohomology group.