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On the Principles of the Logical Algebra; with Applications. Part II

Published online by Cambridge University Press:  15 September 2014

Alexander Macfarlane
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Extract

The equation

x2 = x

expresses the condition that the symbol x be single and positive. The equation

x2 = −x

expresses the condition that the symbol x be single and negative. The principle of contradiction

x(1−x)=0

can be legitimately deduced with the help of the fundamental axioms of the science.

Type
Proceedings 1878–79
Information
Proceedings of the Royal Society of Edinburgh , Volume 10 , 1880 , pp. 61
Copyright
Copyright © Royal Society of Edinburgh 1880

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