Negation of implies

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Statement

Here is the truth table for implies, with the negation computed (the negation is simply ¬(AB) - so ¬ of whatever is in the AB column)

A B AB A ¬B A(¬B) ¬(AB)
T T
T T
T T T T T
T T T T

It is easy to see that the negation of implies is the same as A(¬B)

So to negate AB we require to have A but not B