On boundary values system of sequential hybrid fractional differential equations

This work is devoted to study a broad system of sequential hybrid fractional differential equations (S-HFDEs).Sufficient conditions related to the existence theory for the aforementioned system are investigated by utilizing the coincidence degree theory of topology.The mentioned degree theory is a powerful instrument which can be utilized to examine a wide range of nonlinear problems for qualitative theory.In addition, for the system of boundary value problems (BVPs) of S-HFDEs under consideration, a result concerning the Ullam-Hyers (U-H) stability is also developed.A pertinent example is also given to verify our theoretical results.