Tuesday, May 28, 2013

What do you mean by Duality principle?


Any logical expression that are deducible from the postulates of logical expressions remains valid if operators AND (˄) and OR (∨) are interchanged and the truth value T and F are interchanged, the new expression so formed is called Dual of the original expression.  If p is a proposition then its Dual is denoted by p*.

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