Existence and multiplicity of positive solutions for a class of fractional bound
一类分数阶微分方程边值问题正解的存在性和多重性，王永庆，刘立山，本文研究下列分数阶微分方程$$left{ligned&D^{lpha}_{0+}u(t)+a(t)f(t,u(t))=0,0
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