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DEIP.  Note 1

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| [A Boolian Algebra With One Constant]
|
| Every logical notation hitherto proposed has an unnecessary number of signs.
| Is is by means of this excess that the calculus is rendered easy to use and
| that a symmetrical development of the subject is rendered possible;  at the
| same time, the number of primary formulae is thus greatly multiplied, those
| signifying facts of logic being very