2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/70042In this paper we prove that bounded Hua-harmonic functions on tube domains that satisfy some boundary regularity condition are necessarily pluriharmonic. In doing so, we show that a similar theorem is true on one-dimensional extensions of the Heisenberg group or equivalently on the Siegel upper half-plane.Classical Analysis and ODEsComplex Variables22E30;32M15;35J25;58J32text