Fixed point approach to the Mittag-Leffler kernel-related fractional differential equations

<abstract><p>The goal of this paper is to present a new class contraction mappings, so-called $ \eta _{\theta }^{\ell } $-contractions. Also, in the context partially ordered metric spaces, some coupled fixed-point results for $-contraction mappings are introduced. Furthermore, support our results, two examples provided. Finally, theoretical applied obtain existence solutions fractional differential equations with Mittag-Leffler kernel.</p></abstract>