“…In the present work, we continue the analysis begun in [6] by studying the translation operator and the convolution product related to this transformation. Following the framework of Delsarte [3] and Levitan [15], we introduce a generalized translation T ν,m x f (y) = u(x, y) (x, y ≥ 0, m ∈ SL(2, R)) of a function f ∈ C 2 ([0, +∞[) as the solution to the following Cauchy problem ∆ m ν,x u(x, y) = ∆ m ν,y u(x, y), u(x, 0) = f (x), ∂ ∂x u(x, 0) = 0,…”