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Remarks on singular critical growth elliptic equations
Let $\Omega$ be a bounded domain in $\mathbb R^N$$(N\geq 4)$
with smooth boundary $\partial \Omega$ and the origin $0 \in
\overline{\Omega}$, $\mu<0$, 2*=2N/(N-2). We obtain existence
results of positive and sign-changing solutions to Dirichlet
problem $-\Delta u=\mu\frac{ u}{|x|^2}$+|u|2*-2u+$\lambda u
\ \text{on}\ \Omega,\ u=0
\ \text{on}\ \partial\Omega$, which also gives a positive
answer to the open problem proposed by A. Ferrero and F. Gazzola
in [Existence of solutions for singular critical growth semilinear
elliptic equations, J. Differential Equations, 177(2001),
494-522].