No, because with mathematical proof you can realistically go through the derivations to approve/refute them. It is a short hand referencing something which can

No, because with mathematical proof you can realistically go through the derivations to approve/refute them. It is a short hand referencing something which can be disproven, therefore not an appeal to authority. Using "experts" here IS an appeal to authority. Bias is at play here in a way that it is not in mathematical proofs. "Experts" is used here to provide cognitive ease to the reader, as a way of encouraging them not to examine deeper.