Modified Mittag-Leffler Functions with Applications in Complex Formulae for Fractional Calculus

Abstract

Mittag-Leffler functions and their variations are a popular topic of study at the present time, mostly due to their applications in fractional calculus and fractional differential equations. Here we propose a modification of the usual Mittag-Leffler functions of one, two, or three parameters, which is ideally suited for extending certain fractional-calculus operators into the complex plane. Complex analysis has been underused in combination with fractional calculus, especially with newly developed operators like those with Mittag-Leffler kernels. Here we show the natural analytic continuations of these operators using the modified Mittag-Leffler functions defined in this paper.

Keywords

• Mittag-Leffler functions
• Prabhakar fractional calculus
• Atangana–Baleanu fractional calculus
• complex integrals
• analytic continuation