investigation of soil properties like cation exchange capacity (cec) plays important roles in study of environmental reaserches as the spatial and temporal variability of this property have been led to development of indirect methods in estimation of this soil characteristic. pedotransfer functions (ptfs) provide an alternative by estimating soil parameters from more readily available soil data...

In this article we explore under which conditions on the interior function composition of functions is measurable. We also study sharpness result by providing a counterexample for weaker hypotheses.