Propositional Logic: not-(A or B) @PhilosophyFreak

Propositional Logic: not-(A or B) @PhilosophyFreak

Uploaded February 2013 | Updated September 2026, 3 weeks ago

criticalthinkeracademy.com

This video shows how to evaluate the contradictory of a disjunction, "not-(A or B)". This is one half of the pair of formulas known as "DeMorgan's Laws".

Propositional Logic: not-(A or B)

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Propositional Logic: not-(A or B)