  Two conjectures about homology groups, K-groups and topological full groups
of minimal etale groupoids on Cantor sets are formulated. We verify these
conjectures for many examples of etale groupoids including products of etale
groupoids arising from one-sided shifts of finite type. Furthermore, we
completely determine when these product groupoids are mutually isomorphic.
Also, the abelianization of their topological full groups are computed. They
are viewed as generalizations of the higher dimensional Thompson groups.
