We study the boundedness of the maximal operator, potential type
operators and operators with fixed singularity (of Hardy and
Hankel type) in the spaces $L^{p(\cdot)}(\rho,\Omega)$ over a
bounded open set in $\mathbb{R}^n$ with a power weight
$\rho(x)=|x-x_0|^\gamma$, $x_0\in \overline{\Omega}$, and an exponent $p(x)$
satisfying the Dini-Lipschitz condition.