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Existence and uniqueness of solutions for multi-point boundary value problems for fractional differential equations. (English) Zbl 1214.34007
The authors investigate the existence and uniqueness of solutions for the multi-point boundary value problem for fractional differential equations of the form
$D_t^\alpha y(t)= f(t,y(t),D_t^\beta y(t)),\,\,t\in (0,1),\tag{1}$
$y(0)=0, \,\,D_t^\beta y(1)-\sum_{i=1}^{m-2}\zeta_iD_t^\beta y(\xi_i)=y_0,\tag{2}$
where $$1<\alpha\leq 2$$, $$0<\beta<1$$, $$0<\xi_i<1,$$ $$i=1,2,\dots,m-2$$, $$\xi_i\geq 0$$ with $$\gamma=\sum_{i=1}^{m-2}\zeta_i\xi_i^{\alpha-\beta-1}<1$$ and $$D_t^\alpha$$ represents the Riemann-Liouville fractional derivative.
The main tool used by the authors is based on fixed point theory. Specifically, they use the contraction mapping principle and the Schauder fixed point theorem.

##### MSC:
 34A08 Fractional ordinary differential equations 34B10 Nonlocal and multipoint boundary value problems for ordinary differential equations 47N20 Applications of operator theory to differential and integral equations
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##### References:
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