A note on the eigenvalues of fractional Hardy-Sobolev operator with indefinite weight

In this article, we study the eigenvalue of nonlinear $p-$fractional Hardy operator \begin{align*} (-Δ)_p^αu - μ\frac{|u|^{p-2}u}{|x|^{pα}} = λV(x) |u|^{p-2}u \; \text{in}\; Ω, \quad u = 0 \; \mbox{in}\; \mathbb{R}^n \setminusΩ, \end{align*} where $n>pα$, $p\geq2$, $α\in(0,1)$, $0\leq μ<C_{n,α,p}$ and $Ω$ is a domain in $\mathbb{R}^n$ with Lipschitz boundary containing $0$. In particular, $Ω=\mathbb{R}^n$ is admitted. The weight function $V$ may change sign and may have singular points. We also show that the least positive eigenvalue is simple and it is unique associated to a non-negative eigenfunction. Moreover, we proved that there exists a sequence of eigenvalues $λ_k \to \infty$ as $k\to\infty$.

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