Introduction to Logic Online Course, Week 9: Natural Deduction for Propositional Logic, Proving Logical Truths (Video Lecture)
The following is the Week 9 video lecture for my online Introduction to Logic course, from the Fall 2020 semester at College of Eastern Idaho.
Introduction to Logic, Week 9 Video Lecture: Natural Deduction for Propositional Logic, Proving Logical Truths
This video lecture covers using the Conditional Proof (CP) and/or Indirect Proof (IP) methods for proving logical truths (tautologies) in propositional logic natural deduction.
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Related Reading:
A Concise Introduction to Logic, 13th edition by Patrick J. Hurley and Lori Watson