S. V. Erokhin
abstract:
We investigate a Cauchy problem and a boundary value problem for a fractional 
order differential operator, where the order of the operator is within the range 
between 2 and 3. Relationship is established between the eigenvalues of such 
operators and zeroes of functions of Mittag-Leffler type. Approximation matrices 
are also investigated.
Mathematics Subject Classification: 34K
Key words and phrases: Fractional derivative, differential operator, boundary value problem, oscillation matrices