Mixed conformable and iterated fractional quantitative approximation by Choquet integrals

Here we study the quantitative mixed conformable and iterated fractional approximation of positive sublinear operators to the unit operator. These are given a precise Choquet integral interpretation. Initially we start with the research of the mixed conformable and iterated fractional rate of the convergence of the well-known Bernstein-Kantorovich–Choquet and Bernstein–Durrweyer–Choquet polynomial Choquet-integral operators