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Questionnaire-2024
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Questionnaire-2024/natural_deduction_propositi.../0036_sol.tex

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added ndprop chapter
3 months ago
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  1. This sequent is not provable, counter example: \\
  2. $\mathcal{M} : p = T, q = F, r = F$ \\
  3. $\mathcal{M} \models p \lor q, \lnot q \lor r$ \\
  4. $\mathcal{M} \nmodels r$