1 “...Equivariant cohomology has become an indispensable tool in algebraic geometry and in related areas...”

2 Table of Contents: “... The Winding Number -- 4 Applications of Winding Numbers -- III Cohomology and Homology, I -- 5 De Rham...”

3 “... is not a vector space, we have learned to replace it by one that is {e. g. , a cohomology group, tangent...”