Logical Falsehood and Inconsistency
Each of the following problems requires that
- you give a derivation in SD to show either
- that a single sentence is logically false or
- that a set is logically inconsistent.
- You are to take the individual sentence as premise (for showing logical
falsehood) or the set as the set of premises (for showing logical inconsistency).
- Then derive any sentence and its negation.