We prove that Cayley graphs of SL 2 (F p ) are expanders with respect to the projection of any fixed elements in SL(2, Z) generating a non-elementary subgroup, and with respect to generators chosen at random in SL 2 (F p ).
No takes yet. Share an insight, caveat, or question.
Bourgain et al. (2008) studied this question.
Synapse has enriched 4 closely related papers on similar clinical questions. Consider them for comparative context: