Using only the rules of SD, derive the following rules of SD+: a) Disjunctive Syllogism (one...

Using only the rules of SD, derive the following rules of SD+:

a) Disjunctive Syllogism (one case) :

P v Q
~P

b) Commutation: (wedge only) :

P v Q <--> Q v P

c) Implication :

P ⊃ Q <--> Q ⊃ ~P

d) Double Negation

P <--> ~~P

e) DeMorgan

(~(P & Q) <--> ~P v ~Q only)

Use SL sentences rather than metavariables in your derivations. Each direction of replacement rules must be shown (that is, you are proving "equivalence in SD" in these cases)

Solutions

Expert Solution

Colby Messinger answered 1 year ago

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