Differential Equations & Applications · Volume 9, Issue 4 Positive solutions for a class of fractional difference boundary value problems 09-32 Pages 479-493 DOI 10.7153/dea-2017-09-32 Downloads Short PDF Full PDF PNG Authors Jiafa Xu Donal O'Regan Chengmin Hou Yujun Cui Keywords discrete fractional boundary value problems positive solutions fixed point index Leggett-Williams fixed point theorem Subject classes 34B10 34B18 34A34 45G15 45M20