Published online by Cambridge University Press: 18 May 2021
We consider the boundary Hardy–Hénon equation
\[ -\Delta u=(1-|x|)^{\alpha} u^{p},\ \ x\in B_1(0), \]
$B_1(0)\subset \mathbb {R}^{N}$
$(N\geq 3)$ is a ball of radial
$1$ centred at
$0$,
$p>0$ and
$\alpha \in \mathbb {R}$. We are concerned with the estimate, existence and nonexistence of positive solutions of the equation, in particular, the equation with Dirichlet boundary condition. For the case
$0< p<({N+2})/({N-2})$, we establish the estimate of positive solutions. When
$\alpha \leq -2$ and
$p>1$, we give some conclusions with respect to nonexistence. When
$\alpha >-2$ and
$1< p<({N+2})/({N-2})$, we obtain the existence of positive solution for the corresponding Dirichlet problem. When
$0< p\leq 1$ and
$\alpha \leq -2$, we show the nonexistence of positive solutions. When
$0< p<1$,
$\alpha >-2$, we give some results with respect to existence and uniqueness of positive solutions.