Activity

Human mathematics are the symbolic representation of Natural regularities in the material processes and they do not represent approximations

All available mathematics describing material processes are approximations.  Human kind has no perfectly accurate (true) models of material processes available at this time, none whatsoever.

What we have are valid approximations.  We say they are valid because experiments tell us that the models we have yield predictions that are very accurate over a wide variety of circumstances, so we conclude that the model is validity approximating a real underlying material process.