Quasilinearization and boundary value problems for Riemann-Liouville fractional differential equations

Quasilinearization and boundary value problems for Riemann-Liouville fractional differential equations

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We apply UNISEX the quasilinearization method to a Dirichlet boundary value problem and to a right focal boundary value problem for a Riemann-Liouville fractional differential equation.First, we sue the method of upper and lower solutions to obtain the uniqueness of solutions of the Dirichlet boundary value problem.Next, we apply a suitable fixed point theorem to establish the existence of solutions.We develop a quasilinearization algorithm and construct sequences of approximate solutions that converge monotonically and quadratically to the unique solution of the boundary value problem.

Two examples are exhibited to illustrate the main result for the Washer-Dryers Dirichlet boundary value problem.