Database System Concepts
Database System Concepts
7th Edition
ISBN: 9780078022159
Author: Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Publisher: McGraw-Hill Education
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Construct proof for the following argument within the system of sentential logic:
1. -Q 2 -R
Premise
2. -(P & Q)
Premise
3. -(-P &-R) Premise /:. -(P = R)
7:18 AM
Prove within the system of sentential logic that "anything follows from a contradiction", i.e., prove the following argument:
1. P& -P
Premise /:. Z
7:18 AM
Construct proof for the following argument within the system of sentential logic:
1. (A & B) > (C V D)
2. -(C V (B > X))
3. -[D =-(X & Y)]
Premise
Premise
Premise
4. -Aɔ -Z
Premise /:. -Z
7:18 AM
Construct proof for the following argument within the system of sentential logic:
1. -(-Dɔ -C) ɔ -B
Premise
2. -Bɔ A
Premise
3. (YV C) & (~C V-A)
Premise /:. DV (A V Y)
7:18 AM
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Transcribed Image Text:Construct proof for the following argument within the system of sentential logic: 1. -Q 2 -R Premise 2. -(P & Q) Premise 3. -(-P &-R) Premise /:. -(P = R) 7:18 AM Prove within the system of sentential logic that "anything follows from a contradiction", i.e., prove the following argument: 1. P& -P Premise /:. Z 7:18 AM Construct proof for the following argument within the system of sentential logic: 1. (A & B) > (C V D) 2. -(C V (B > X)) 3. -[D =-(X & Y)] Premise Premise Premise 4. -Aɔ -Z Premise /:. -Z 7:18 AM Construct proof for the following argument within the system of sentential logic: 1. -(-Dɔ -C) ɔ -B Premise 2. -Bɔ A Premise 3. (YV C) & (~C V-A) Premise /:. DV (A V Y) 7:18 AM
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Follow-up Question

Construct proof for the following argument within the system of sentential logic:

1. (A & B) ⊃ (C V D)    Premise
2. ~(C V (B ⊃ X))         Premise
3. ~[D ≡ ~(X & Y)]        Premise
4. ~A ⊃ ~Z                     Premise     /: .  ~Z

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Follow-up Question

Construct proof for the following argument within the system of sentential logic:

1. ~(~D ⊃ ~C) ⊃ ~B            Premise
2. ~B ⊃ A                            Premise
3. (Y V C) & (~C V ~A)     Premise    /: . D V (A V Y)

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Follow-up Question

Prove the following proposition to be a tautology by constructing a proof for the following theorem within the system of sentential logic:

~(P ≡ Q) ⊃ (P ≡ ~Q)

 

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Follow-up Question

Construct proof for the following argument within the system of sentential logic:

1. ~Q ⊃ ~R         Premise
2. ~(P & Q)       Premise
3. ~(~P & ~R)    Premise     /:.  ~(P ≡ R)
--------------------------------

 

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Follow-up Questions
Read through expert solutions to related follow-up questions below.
Follow-up Question

Construct proof for the following argument within the system of sentential logic:

1. (A & B) ⊃ (C V D)    Premise
2. ~(C V (B ⊃ X))         Premise
3. ~[D ≡ ~(X & Y)]        Premise
4. ~A ⊃ ~Z                     Premise     /: .  ~Z

Solution
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Follow-up Question

Construct proof for the following argument within the system of sentential logic:

1. ~(~D ⊃ ~C) ⊃ ~B            Premise
2. ~B ⊃ A                            Premise
3. (Y V C) & (~C V ~A)     Premise    /: . D V (A V Y)

Solution
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Follow-up Question

Prove the following proposition to be a tautology by constructing a proof for the following theorem within the system of sentential logic:

~(P ≡ Q) ⊃ (P ≡ ~Q)

 

Solution
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Follow-up Question

Construct proof for the following argument within the system of sentential logic:

1. ~Q ⊃ ~R         Premise
2. ~(P & Q)       Premise
3. ~(~P & ~R)    Premise     /:.  ~(P ≡ R)
--------------------------------

 

Solution
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