On Thu, Mar 10, 2016 at 12:52 AM, Ken Whistler <kenwhist...@att.net> wrote: > But to know for sure, you would probably have to get confirmation > of original sources from Barbara Beeton and/or Patrick Ion, > who collected together symbol candidates from a multitude > of print sources back in the 1998 - 2001 time frame.
I have emailed Barbara with the question, and pointed to this thread. Will report back when I get a response. On Twitter, someone pointed out an example of the two-dot notation, and even a center-dot notation (instead of the "right dot" of U+2686 ⚆). See page 4 (printed page number 206) of this PDF: http://library.msri.org/books/Book29/files/kim.pdf