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Negation
Any proposition Not P
Not P is true if and only if P
is false. It is false only if P is true.
The truth table for Not P is
as follows:
If you have Java, try it out for yourself:
Set the truth values for the propositions
Notice that it does not matter whether
For Educators Stephen Downes Guide to the Logical Fallacies Copyright © Stephen Downes, 1995-2001 stephen.downes@ualberta.ca |