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Results for: 'condidtional derivation'
conditional derivation proofs PHIL 013AB
A nine-minute video about conditional derivation, a new kind of rule. Listen closely for a special appearance from a duck. (Edited to add: the squeaking thing is actually a raccoon)
conditional derivation proofs PHIL 013C
A nine-minute video about conditional derivation, a new kind of rule. Listen closely for a special appearance from a squeaky raccoon.
universal derivation PHIL013AB
A video on the Universal Derivation rule for predicate proofs, a rule for doing proofs where the SHOW line begins with Ax.
A video about doing proofs, introducing how to do direct derivations, and the &I and &O rules.
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.
spontaneous show proofs PHIL013AB
A video on how to do proofs where you write down SHOW statements that don't come from specific derivation rules.
A video about how to do proofs where you write down SHOW statements that don't come from any particular derivation rule.