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17 lines
346 B
17 lines
346 B
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\begin{logicproof}{1}
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p \land r & \prem\\
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p & $\ande{1} 1$ \\
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r & $\ande{2} 1$ \\
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\begin{subproof}
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s & \assum\\
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r & $\copying 2$
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\end{subproof}
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s \imp r & $\impi 4-5$\\
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\begin{subproof}
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q & \assum\\
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p & $\copying 1$
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\end{subproof}
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q \imp p & $\impi 7-8$ \\
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(q \imp p) \land (s \imp r) & $\andi 6,9$
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\end{logicproof}
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