Discrete Dynamics in Nature and Society
Volume 2010 (2010), Article ID 142175, 15 pages
doi:10.1155/2010/142175
  
     
          
          Existence and uniqueness of solutions for the Cauchy-type problems of fractional differential equations
          
            Chunhai Kou1
            , Jian Liu1
             and Yan Ye3
          
          1Department of Applied Mathematics, Donghua University, Shanghai 201620, China
          3College of Information Sciences and Technology, Donghua University, Shanghai 201620, China
          
          Abstract
By using the Banach fixed point theorem and step method, we study the existence and uniqueness of solutions for the Cauchy-type problems of fractional differential equations. Meanwhile, by citing some counterexamples, it is pointed out that there exist a few defects in the proofs of the known results.