“…3 Katz and Sarnak [KaSa1,KaSa2] conjectured that as the conductors tend to infinity, the 1-level density agrees with the scaling limit of a classical compact group. There are now many cases where, for suitably restricted test functions, we can show agreement between the main terms and the conjectures; see, for example [DM1,FI,Gao,Gü,HR,HM,ILS,KaSa2,Mil1,OS,RR,Ro,Rub,Yo2]. Now that the main terms have been successfully matched in numerous cases, it is natural to try to analyze the lower order terms.…”