2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/105998On a series of examples from the field of viscoelasticity we demonstrate that it is possible to attribute physical meaning to initial conditions expressed in terms of Riemann-Liouville fractional derivatives, and that it is possible to obtain initial values for such initial conditions by appropriate measurements or observations.LaTeX2e, 14 pagesMathematical Physics26A33 (Primary) 65L05, 65M99 (Secondary)Physical interpretation of initial conditions for fractional differential equations with Riemann-Liouville fractional derivativestext