Axiomatic Local Metric Derivatives for Low-Level Fractionality with   Mittag-Leffler Eigenfunctions
  In this contribution, we build up an axiomatic local metric derivative that exhibits the Mittag-Leffler as an eigenfunction and is valid for low-level fractionality, whenever the order parameter is close to $1$. This version of deformed or metric derivative may be a possible alternative to the versions by Jumarie and the inappropriately so-called local fractional derivative also based on the Jumarie's approach. With rules similar to the classical ones, but with a solid axiomatic basis in the limit pointed out here, we present our results and some comments on the limits of validity for the controversial formalism found in the literature of the area. 
J. Weberszpil and J. A. Helay\"el-Neto
math-ph cond-mat.stat-mech hep-th math.MP