[Blindmath] using Braille for math

[Susan Jolly]

Dr. Nemeth, who was completely blind, had a Ph.D. in math and for many years 
was a professor of mathematics at a University where he taught numerous 
different courses so his braille math system is very comprehensive.  There 
is also a prescription for adding any missing symbols you might need.

Nemeth math has a number of advantages over UEB math.  One is that most 
expressions use fewer braille cells in Nemeth than in UEB. Another is that 
Nemeth always uses the same braille symbol for the same print whereas UEB 
sometimes uses different symbols for the same print depending on whether the 
expression is inline or displayed. A third advantage is that Nemeth doesn't 
require extra enclosure symbols such as parentheses not present in  the 
corresponding print math whereas UEB does sometimes require these so-called 
phantom enclosures.  A fourth advantage is that Nemeth uses lower or dropped 
decimal digits which don't require a number sign to avoid ambiguity whereas 
UEB uses upper digits so a number sign is always required. There are 
numerous other differences as well.

HTH,
Susan Jolly