Lattices in products of trees and a theorem of H. C. Wang
Lattices in products of trees and a theorem of H. C. Wang
We study cocompact lattices with dense projections in a product of locally compact groups and show, under the assumption that each is a closed subgroup of the automorphism group of a regular tree satisfying certain local transitivity conditions, that such a lattice is contained in only finitely many discrete subgroups …