Final Cover - For Printing

Base Code 1 : Mirror Image of letter (v)
Numeral Sign ( )
Numeral sign is indicated by the mirror image of the letter (v) and the dots configuration
are dots 3,4,5 and 6. In Nemeth code, the numerals are indicated by the lower Braille
cells, that is by dots 2,3,5, and 6 and therefore, there is no confusion between the upper
and combination of lower Braille cells which are used for letters. Numeral sign is used
before the number when it appears alone.

2 and 7 and

In addition to the function as numeral indicator, ( ) is also used as closing of a simple

fraction which will be introduced later.

Base Code 2: Mirror image of the letter (u)
Plus Sign ( )

The reverse (u) indicates the plus sign in mathematics. This has other connotations too.
For example, in set language, it is used for the sign “union”. As union is nothing but the
addition of values, it is appropriate to use the sign “plus”. While the numbers are added,
there is no need to insert numeral sign after the plus sign since, the plus sign indicates
that the cell following the plus sign may be a numeral or a letter. As Nemeth code is using
upper cell combinations for English letters and the lower cell combinations for numbers
(0 to 9), there is no confusion about the Braille codes for alphabets and numbers and
therefore, there is no need to use the numeral sign following the basic operation symbols
such as plus, minus, multiplication, and division. The other basic operations will be
discussed in the later sections. The illustration for the use of plus sign is as follows:

x + y

2 + 3

2x + 4

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