Are mathematical errors in an answer that is otherwise reasonable and on-topic ever a sufficient reason for users (other than the answer-author) to delete that answer?
For a recent answer, the author might still delete or repair it on their own or in response to comments, given enough time to realize the error and consider a correction. In this case it seems better that only the author should delete an answer, no matter how wrong the contents.
For old answers that are severely wrong, I expect there will be some debate but personally I do not see any additional sufficient reason. Maybe there could be some exceptional situations where the Q and A are from deleted users, the answer is unique or accepted, and other questions are closed as duplicates of the wrongly-answered question. For the generic case, the ability to downvote, comment and to post other answers seems (to me) a sufficient quality control mechanism.
Addendum. From earlier discussions it appears that
the Low Quality post review queues were never intended for answer deletions based (only) on the content being incorrect. This was the understanding from StackOverflow/Stackexchange and there has always been the same consensus on this meta. a, b, c, d, e