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7 lines
333 B
7 lines
333 B
\item \lect Translate the following reasoning into a sequent. If the sequent is valid, proof it using the rules of natural deduction.
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If the sequent is not valid, provide a counter example.
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\begin{quote}
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If I press the button, the window opens. \\
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The window is open.\\
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Therefore, I pressed the button.\\
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\end{quote}
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