Symmetry properties for systems of two ordinary fractional difeferential equations
Lie point symmetries of two systems of ordinary fractional %differential equations with the Riemann-Liouville derivatives are considered. Infinite %algebra $L$ of equivalence transformation operators is constructed. It is shown that all %admitted operators generate some subalgebra in $L$ and classification of systems with respect to point symmetries %can be based on the optimal system of subalgebras. The optimal system of one-dimensional $L$ %subalgebras and the complete normalized optimal system for its finite-dimensional part %$L_6$ are constructed