Chapter 0: [Propositional Logic] Proof Techniques (Logic - Section 8, Example 2)

In this video I provide a proof for a theorem with "if and only if" statement.

(Materials and examples in this lecture are borrowed from the following textbook: “A Concise Introduction to Logic” by Craig DeLancey (Open SUNY Textbooks). Please consult this brilliant, open access book, which is available online, for more detailed discussion.)