Reply To: “not” sign
The "not" sign is not in the original Nemeth Code. This negation sign is common and has been under discussion in the BANA Nemeth committee. Perhaps a new symbol will be proposed. In the meantime, the advice I have received is that the transcriber should devise a symbol that is in keeping with usage, and to explain in a transcriber's note. In this case, I suggest a 2-cell "dot 4" symbol since the more common symbol of ~p (tilde p) is a dot-4 symbol. Note that, listed in Appendix B of the Nemeth Code, there are 71 symbols beginning with a dot 4 so choose your symbol carefully since you cannot use one which already has a meaning. As luck would have it, (4, 1456) is available! I suggest using that.
Lindy