A quick question from a friend: “In a UEB math transcription, are Greek letters (pi, etc) put on the special symbols page? We know they’re not included in Nemeth, but are they Special symbols in UEB Math?"
The portion of BF2016's Appendix G to which you refer would likely justify including all math symbols used in a volume.
Nonetheless, I would advise against it. I would at least leave out equals, plus, minus, and the multiplication cross.
Alas, Special Symbols Pages (what to include and what to call the entries) is so dependent on the actual content of the transcription as well as the experience of the reader that it is often as much art as science to create a Special Symbols Page.