1) Give a general proof to show that for all sentences X and Y and for every consistent set Σ of sentences, if X and Y are logical consequences of Σ, then the set {X, Y} is consistent.

2) Let C be a logical consequence of the set {P1, P2, P3} and of the set {P1, P2, not-P3}. Prove that C is a logical consequence of {P1, P2}.

Similar Questions

In general, thesis or central idea is supported by claims; claims are supported by proof; andA.proof is supported by
1. 1 answer
give examples for all of themdeclarative sentences – sentences that are statements; they provide information and end with a
1. 1 answer
1)given-AB=CD,CD=EFprove-AB-EF (in 5 steps that show why it is corect; i.e two-column proof) 2)Given-<2=<3, <4=<5 prove-<1 is
1. 4 answers
You are delivering a speech to a group of married couples about how the marriage bond may be improved. In your speech, you
1. 1 answer