Propositional Logic Indirect and Partial Truth Tables

In this video on #Logic / #PhilosophicalLogic we use partial truth tables to determine whether a wff is a tautology or contradiction. In turn, we use this method to determine whether arguments are valid. This is a much more efficient way than drawing entire truth tables.

0:00 [Intro]
0:32 [Tautologies]
5:28 [Contradictions]
7:38 [Validity & Entailment]

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Logic:    • Philosophical Logic  

-Recommended Textbooks-
The Logic Book: https://amzn.to/31h2qR8
Modal Logic for Philosophers (Garson): https://amzn.to/3dECGn4
A Friendly Introduction to Mathematical Logic: https://amzn.to/37hMYZa
An introduction to Formal Logic with Philosophical Applications: https://amzn.to/3j3J9sx

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