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# Prove that the following sequents cannot be valid:(i) (P = Q) v ~ R F (~ Q^R) = P(ii) P = Q, R=~ SF (PV R) = (Qv S)Let W1, Wz,W be wffs in Propositional Logic.Prove...

## Question

###### Prove that the following sequents cannot be valid:(i) (P = Q) v ~ R F (~ Q^R) = P(ii) P = Q, R=~ SF (PV R) = (Qv S)Let W1, Wz,W be wffs in Propositional Logic.Prove that W,Wz FW < F (W = (Wz = W)):Prove that | (Wi = (Wz = W)) < > W1,Wz F W .

Prove that the following sequents cannot be valid: (i) (P = Q) v ~ R F (~ Q^R) = P (ii) P = Q, R=~ SF (PV R) = (Qv S) Let W1, Wz,W be wffs in Propositional Logic. Prove that W,Wz FW < F (W = (Wz = W)): Prove that | (Wi = (Wz = W)) < > W1,Wz F W .  #### Similar Solved Questions

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24) Which of te following clcmcnts 71 TLa # Mlctobc n Kllmalot ofckrtncnly" AN RJS Ciha Dici Aneucr 251 Most clcments Tcnodic (hlc nc HAllL< eatth mncals aemiatictl mca nan-mnctl Cinchle E4 Aec Elemicugs enodic Croln sltLIIJi El molat ILIsse; Innaucal nrunctncs cheicai nionenics dctimcs Cinr...
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