In this manuscript, we consider the conformable fractional Sturm-Liouville
problem (CFSLP) with finite numbers of transmission conditions at an
interior point in [0, ?]. Also, we study the uniqueness theorem for inverse
second order of fractional differential operators by applying three spectra
with a finite number of discontinuities at interior points. For this aim, we
investigate the CFSLP in three intervals [0, ?], [0, p], and [p, ?] such
that p ? (0, ?) is an interior point.