Abelian Cycles in the Homology of the Torelli group

Erik Lindell

In the early 1980's, Johnson defined a homomorphism ${\mathcal{I}}_g^1\to {\bigwedge }^3{H}_1(S_g,\mathbb{Z})$, where ${\mathcal{I}}_g^1$ is the Torelli group of a closed, connected a…