Fuzzy approximation of a fractional Lorenz system and a fractional financial crisis.

Our aim in this paper is to study the fuzzy stability of a fractional Lorenz system in the sense of the Caputo-Fabrizio derivative and a fractional financial crisis in the sense of ♄−Hilfer derivative. Defining a new type of fuzzy control function that has a dynamic situation helps us to investigate new stability results for these mathematical models. [ABSTRACT FROM AUTHOR]