Mathematics, Department of


First Advisor

Allan C. Peterson

Date of this Version



Areeba Ikram. Green's Functions and Lyapunov Inequalities for Nabla Caputo Boundary Value Problems. PhD thesis, University of Nebraska-Lincoln, 2018.


A DISSERTATION Presented to the Faculty of The Graduate College at the University of Nebraska In Partial Fulfillment of Requirements For the Degree of Doctor of Philosophy, Major: Mathematics, Under the Supervision of Professor Allan C. Peterson. Lincoln, Nebraska: July, 2018

Copyright (c) 2018 Areeba Ikram


Lyapunov inequalities have many applications for studying solutions to boundary value problems. In particular, they can be used to give existence-uniqueness results for certain nonhomogeneous boundary value problems, study the zeros of solutions, and obtain bounds on eigenvalues in certain eigenvalue problems. In this work, we will establish uniqueness of solutions to various boundary value problems involving the nabla Caputo fractional difference under a general form of two-point boundary conditions and give an explicit expression for the Green's functions for these problems. We will then investigate properties of the Green's functions for specific cases of these boundary value problems. Using these properties, we will develop Lyapunov inequalities for certain nabla Caputo BVPs. Further applications and extensions will be explored, including applications of the Contraction Mapping Theorem to nonlinear versions of the BVPs and a development of Green's functions for a more general linear nabla Caputo fractional operator.

Adviser: Allan C. Peterson

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