A critical Kirchhoff type problem involving the fractional Laplacian in

In this paper, we are concerned with the existence of solutions for a critical p-Kirchhoff type problem driven by a nonlocal integro-differential operator: (Formula presented.) where (Formula presented.) is a continuous function, (Formula presented.) is a singular kernel function, (Formula presented.) is a nonlocal fractional operator, (Formula presented.) with (Formula presented.), (Formula presented.), f is a Carathéodory function on (Formula presented.) satisfying the Ambrosetti–Rabinowitz type condition. Under some suitable assumptions, we obtain the existence of nontrivial solutions for above problem by applying the mountain pass theorem. A distinguished feature of this paper is that M(0) may be zero, which means that the problem is degenerate. Consequently, the main theorem extends in several directions the recent results of Autuori, Fiscella and Pucci [Nonlinear Anal. 2015;125:699–714].