RE: [EXTERNAL] Some braille references

FWIW Unicode has long had a math symbol named ratio: U+2236.

OTOH this article claims the symbol that looks like a colon in the notation
for the index of a subgroup is the colon found on a standard keyboard.
https://en.wikipedia.org/wiki/List_of_mathematical_symbols_by_subject

Susan J.

Received on Tuesday, 13 July 2021 18:33:14 UTC