Riemannian embeddings in codimension one as unbounded $KK$-cycles

Walter D. van Suijlekom, Luuk S. Verhoeven

Given a codimension one Riemannian embedding of Riemannian spin${}^c$-manifolds $ı:X\to Y$ we construct a family $\{{ı}_{!}^{\epsilon }{\}}_{0<\epsilon <{\epsilon }_0}$ of unbounded $KK$-cycles from $C(…