8:44

conditional derivation proofs PHIL 013AB

By: mcweiner

A nine-minute video about conditional derivation, a new kind of rule. Listen closely for a special appearance from a duck.

6:13

proofs vI double negation double arrow PHIL013AB

By: mcweiner

A video on proof rules for wedge in, double negation, and double arrows. NOTE: if you're using captions, there is a possibility that the software may be displaying double arrows in the captions as single arrows. I wrote [double arrow] in the capti...

7:29

DD, &O, and &I proofs

By: mcweiner

A video about doing proofs, introducing how to do direct derivations, and the &I and &O rules.

7:25

proofs with modus tollens and wedge out PHIL013AB

By: mcweiner

A video explaining two proof rules, modus tollens and wedge out, which can be used in proofs for PHIL013.

8:05

Introduction to proofs PHIL 013AB

By: mcweiner

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

3:43

complex translations PHIL013AB

By: mcweiner

A four-minute video on how to do complex translations involving more than two subsentences.

10:26

sentential translations 1 PHIL013AB

By: mcweiner

A ten-and-a-half-minute video about how to do translations in sentential logic, using the basic connectives and phrases like "neither" and "unless."

10:49

truth table applications PHIL 013AB

By: mcweiner

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

7:32

truth table calculation PHIL 013AB

By: mcweiner

An eight-minute video about how to calculate a truth table for a complex statement.