摘要：In this article, we present some existence of weak solutions for a coupled system of implicit fractional differential equations of Hilfer–Hadamard type. Our approach is based on Mönch’s fixed point theorem associated with the technique of measure of weak noncompactness.
关键词：Coupled fractional differential system ; Left-sided mixed Pettis–Hadamard integral of fractional order ; Hilfer–Hadamard fractional derivative ; Weak solution ; Implicit ; Fixed point
