Existence and uniqueness results for Cauchy problem of variable-order fractional differential equations |
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Authors: | Yufeng Xu Zhimin He |
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Institution: | 1. Department of Applied Mathematics, Central South University, Changsha, 410083, China
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Abstract: | In this paper, the existence and uniqueness results of variable-order fractional differential equations (VOFDEs) are studied. The variable-order fractional derivative is defined in the Caputo sense, and the fractional order is a bounded function. The existence result of Cauchy problem of VOFDEs is obtained by constructing an iteration series which converges to the analytical solution. The uniqueness result is obtained by employing the contraction mapping principle. Since the variable-order fractional derivatives contain classical and fractional derivatives as special cases, many existence and uniqueness results of references are significantly generalized. Finally, we draw some conclusions of variable-order fractional calculus, and two examples are given for demonstrating the theoretical analysis. |
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