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9 lines
491 B
9 lines
491 B
\item \self Look at the following statements and tick them if they are true.
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\begin{itemize}
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\item[$\square$] Any sequent that is a correct semantic entailment can be proven.
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\item[$\square$] Any sequent that can be proven is a correct semantic entailment.
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\item[$\square$] If a sequent is not provable, the semantic entailment relation does hold.
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\item[$\square$] If for a sequent the semantic entailment relation does not hold, it cannot be proven with natural deduction.
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\end{itemize}
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