## Search Results

Results for: '*logic*'

Introduction to proofs PHIL 013AB

A video on what proofs are, which explains the concept of simple derivation, and how to do proofs with one proof rule, Modus Ponens.

introduction to predicate proofs PHIL013AB

A video introducing predicate proofs and the first two predicate proof rules, AO and EI.

truth table applications PHIL 013AB

An eleven-minute video on the things you can do with truth-tables. Covers tautology/contradiction/contingent, implication and equivalence, and argument validity.

negation proof rules PHIL013AB

A video on rules for proofs with complex negations, like ~(P & Q), ~(P v Q), and ~(P -> Q).

conditional truth table PHIL013AB

A five-minute video explaining why the truth table for the conditional is the way it is.

negated quantifier proofs PHIL013AB

A video on how to do proofs with negated quantifiers. Introduces two new rules, ~AO and ~EO, and discusses how to do proofs where you need to SHOW negated quantifiers (you have to do ID).