Yes, same answer. Adult braille readers have been taught Nemeth as children the same way print readers have been taught math signs as children. It is part of general literacy. If an adult print reader counters unknown math signs in general reading, then that person is in the same boat as the braille reader. Often the text explains highgly technical symbols found in general reading. If not, not. The point is, the transcriber conveys the print, without editorializing. There is no provision in the any guidelines or rules to teach content.