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Questionnaire-2024
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Questionnaire-2024/natural_deduction_propositi.../0078_sol.tex

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added ndprop chapter
3 months ago
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  1. This sequent is not provable.\\
  3. $\mathcal{M} : p = T, q = T, r = T, s = T$\\
  4. $\mathcal{M} \models p \imp (q \lor r)$\\
  5. $\mathcal{M} \models q \imp s$\\
  6. $\mathcal{M} \models \neg(p \imp (q \land s))$