2 problems

Let $\sigma$ belong to the global Arthur packet $\widetilde{\Pi}_{\phi'}(H_m)$, and suppose $(\pi_0,\sigma_0)$ is the unique global Gan–Gross–Prasad pair in…

Let $\phi$ be a generic $L$-parameter of $U(n)\times U(n)$, and let $\Pi^R_{\phi}$ be its relevant Vogan $L$-packet. A representation in this packet is said to produce the Fourier-…