Title: Zeta functions of twisted quaternionic Shimura varieties Speaker: Cristian Virdol Carslaw 273, Friday 13 August 3:05-3:55PM The zeta function for totally indefinite quaternionic Shimura varieties was computed by Brylinski and Labesse. Then Reimann generalized this result to indefinite quaternionic Simura varieties. I will twist these quaternionic Shimura varieties using a representation of some absolute Galois group and obtain some new varieties. I will compute the zeta function of these varieties and then I will continue meromorphically the zeta function in some special cases.