摘要：In this paper, we introduce the concepts of map $\mathcal {T}$ and interval-valued $\mathcal {T}$
-convex, and give some basic properties. Further, we extend fractional Hermite–Hadamard inequalities in the case of $\mathcal {T}$
-convex and Ostrowski type inequalities for interval-valued functions. Several examples are presented to illustrate the results.
