Symbol Numerical interpretation Logical interpretation `-` `0` `+` -1 0 1 False Uncertainty Truth

Alphabet naturally represents the symmetry of the system, is an international and unique (the symbols `-`, `+` is not found in the scripts of notation).

Convenient at hand calculations. When recording the linear expressions of symmetric ternary alphabet, it is recommended that the number of bracket.

For a concise record of symmetric ternary codes used alphabet of symmetric nonary system, with symbols: W, X, Y, Z, 0, 1, 2, 3, 4. There is the option with the Russian alphabet letters: Ж, Х, У, Ц, 0, 1, 2, 3, 4.

Conformity with symmetrical ternary system

 Nonary code Trinary code W X Y Z 0 1 2 3 4 `--` `-0` `-+` `0-` `00` `0+` `+-` `+0` `++`

Practical application:

• Implementation of arithmetic operations:
`(+0-) * (-) + (++0) = (+0)`
• System Status:
`R = +0-+0-`

In the imaging system used 14-segment indicators, which are equally suitable for display a symmetric ternary and symmetric nonary alphabets.