Choquard equations with critical nonlinearities

In this paper, we study the Brezis–Nirenberg type problem for Choquard equations in ℝN −Δu + u = (Iα ∗|u|p)|u|p−2u + λ|u|q−2uin ℝN, where N ≥ 3,α ∈ (0,N), λ > 0, q ∈ (2, 2N N−2], p = N+α N or N+α N...