Coinciding Directions for Imbeddings of Spaces

Jan W. Jaworowski
1968 Proceedings of the American Mathematical Society  
defined obstruction classes w*(X) to the existence of an imbedding /: X-*Rn of a topological space X in the euclidean w-space R". The Wu-Shapiro classes w{ are particular cases of the Smith classes defined for a space with an involution. We recall briefly the definition.
doi:10.2307/2035540 fatcat:g2lssdmxvreetn5sh5z5r2llkq