A Liouville theorem for some Bessel generalized operators

In this paper we establish a Liouville theorem in ${{\mathcal{H}}^{\mathcal{\prime }}}_{\mu }$ for a wider class of operators in $(0,\mathrm{\infty }{)}^n$ that generalizes the $n$-dimensional Bessel operator. We will present two different proofs, based in two representation theorems for certain distributions “supported in zero”.