Published online by Cambridge University Press: 09 November 2020
This paper deals with the following non-linear equation with a fractional Laplacian operator and almost critical exponents:
\[ (-\Delta)^{s} u=K(|y'|,y'')u^{({N+2s})/(N-2s)\pm\epsilon},\quad u > 0,\quad u\in D^{1,s}(\mathbb{R}^{N}), \]
$\epsilon ^{-(({N-2s-2})/({(N-2s)^2})}$.