Fractional Differential Calculus · Volume 9, Issue 1 An ordering on Green's function and a Lyapunov-type inequality for a family of nabla fractional boundary value problems 09-08 Pages 109-124 DOI 10.7153/fdc-2019-09-08 Downloads Short PDF Full PDF PNG Authors Jagan Mohan Jonnalagadda Keywords fractional order backward (nabla) difference boundary value problem Green's function Lyapunov-type inequality nabla Mittag-Leffler function Subject classes 34A08 39A10 39A12 34B15