Pontryagin Class
In mathematics, the Pontryagin classes are certain characteristic classes. The Pontryagin class lies in cohomology groups with degree a multiple of four. It applies to real vector bundles.
Read more about Pontryagin Class: Definition, Properties, Pontryagin Numbers, Generalizations
Famous quotes containing the word class:
“All this class of pleasures inspires me with the same nausea as I feel at the sight of rich plum-cake or sweetmeats; I prefer the driest bread of common life.”
—Sydney Smith (1771–1845)