4 papers
Examples of finitely presented groups with strong fixed point properties and property (T)
Indira Chatterji, Martin Kassabov
We construct a finitely presented group with property (T) which can not act on on reasonable spaces. Such group is constructed using an generalization of Hall embedding theorem, wh…
Median geometry for spaces with measured walls and for groups
Indira Chatterji, Cornelia Druţu
We show that uniform lattices of isometries of products of real hyperbolic spaces act properly discontinuously and cocompactly on a median space. For lattices in products of at lea…
Horospherical random graphs and lockdown strategies
Indira Chatterji, Austin Lawson
Expanders are sparse graph that are strongly connected, where {\it connectivity} is quantified using eigenvalues of the adjacency matrix, and {\it sparsity} in terms of vertex vale…
Discrete Linear Groups containing Arithmetic Groups
Indira Chatterji, T. N. Venkataramana
We prove in a large number of cases, that a Zariski dense discrete subgroup of a simple real algebraic group which contains a higher rank lattice is a lattice in the group .…