The global Gan-Gross-Prasad conjecture for unitary groups: the endoscopic case

Raphaël Beuzart-Plessis, Pierre-Henri Chaudouard, Michał Zydor

In this paper, we prove the Gan-Gross-Prasad conjecture and the Ichino-Ikeda conjecture for unitary groups $U_n\times U_{n+1}$ in all the endoscopic cases. Our main technical innov…