We construct Poincaré series and Eisenstein series for automorphic pseudodifferential operators, and show that the space of automorphic pseudodifferential operators associated to cusp forms is generated by Poincaré series. We also obtain explicit formulas for such Poincaré series and Eisenstein series.
Philipp FleigHenrik P. A. GustafssonAxel KleinschmidtDaniel Persson
Paula B. CohenYuri I. ManinDon Zagier