2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/58344It is pointed out that Reinsch's matrix operation formulation of calculating the Baker-Campbell-Hausdorff series [math-ph/9905012] is equivalent to the straightforward series expansion. The amount of calculation does not decrease by his method.2 pagesMathematical PhysicsComment on ``A simple expression for the terms in the Baker-Campbell-Hausdorff series''text