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On the Principles of the Logical Algebra; with Applications. Part II
Published online by Cambridge University Press: 15 September 2014
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
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- Copyright © Royal Society of Edinburgh 1880