Poincaré space

短语

词形变化

Poincaré spaces 复数 Poincaré spaces

释义与例句

n.
  1. 1.

    An n-dimensional topological space with a distinguished element µ of its nth homology group such that taking the cap product with an element of the kth cohomology group yields an isomorphism to the (n − k)th cohomology group.

    数学

    Any closed, orientable, connected manifold is a Poincaré space.