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17 lines
472 B
17 lines
472 B
\begin{logicproof}{2}
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q \imp r & \prem \\
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\begin{subproof}
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p \lor q & \assum\\
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\begin{subproof}
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p & \assum \\
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p \lor r & $\ori{1} 2$
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\end{subproof}
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\begin{subproof}
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q & \assum \\
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r & $\impe 5,1$ \\
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p \lor r & $\ori{2} 6$
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\end{subproof}
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p \lor r & $\ore 2,3-4,5-7$
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\end{subproof}
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p \lor q \imp (p \lor r) &$\impi 2-8$
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\end{logicproof}
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