Hello! At present, the proper noun die can't be found in the data, but it means mold, which should be a mathematical model.

Die usually refers to death, withering, disappearance, stop running, mildew, death, mildew and so on. , can also refer to each independent square unit.

Mathematical modeling is to establish a mathematical model according to actual problems, solve the mathematical model, and then solve the actual problems according to the results.