Kevin deLaplante | Propositional Logic: The Contrapositive @PhilosophyFreak | Uploaded February 2013 | Updated October 2024, 13 hours ago.
criticalthinkeracademy.com
This video shows why, given a conditional claim of the form "if A then B", the contrapositive of this claim, "if not-B then not-A", is logically equivalent to the original conditional.
criticalthinkeracademy.com
This video shows why, given a conditional claim of the form "if A then B", the contrapositive of this claim, "if not-B then not-A", is logically equivalent to the original conditional.