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Pontryagin Class

The $i$th Pontryagin class of a Vector Bundle is $(-1)^i$ times the $i$th Chern Class of the complexification of the Vector Bundle. It is also in the $4i$th cohomology group of the base Space involved.

See also Chern Class, Stiefel-Whitney Class

© 1996-9 Eric W. Weisstein