摘要
In this paper,we establish the existence of three positive solutions to a nonlinear fractional differential equation by the Leggett-Williams fixed point theorem.
基金
supported by the Natural Science Foundation of Shanxi Province(2008011002-1)
Shanxi Datong University Institute(2009-Y-15
2010-B-01)
the Development Foundation of Higher Education Department of Shanxi Province(20101109
20111020)