Retraction Note to: Derivative with two fractional orders: A new avenue of investigation toward revolution in fractional calculus

In order to describe more complex problems using the concept of fractional derivatives, we introduce in this paper fractional derivatives with orders. The new definitions are based upon power law together generalized Mittag-Leffler function. first is included power function and second one Each therefore plays an important role while modeling, for instance, two layers with different properties. This case, thermal science a reaction diffusion within media Another case that groundwater flowing aquifer where geological formation formed The presents operators will open doors research and investigations modeling real world problems. Some useful properties new presented, particular their relationship existing integral transforms, namely Laplace, Sumudu, Mellin Fourier transforms. numerical approximation presented. We apply on model plume degradation limited sorption solve numerically some numerical simulations. simulation leaves no doubt believing operators powerfull mathematical tools able portray complexes world