 few in comparison with those which
| merely define the notation.  I have thought that it might be curious to
| see the notation in which the number of signs should be reduced to a
| minimum;  and with this view I have constructed the following.  The
| apparatus of the Boolian calculus consists of the signs, =, &gt; (not
| used by Boole, but necessary to express particular propositions),
| +, -, x [·], 1, 0.  In place of these seven signs, I propose to
| use a single one.
|
| C.S. Peirce, CP 4.12, untitled