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15 lines
535 B
15 lines
535 B
\setlength\subproofhorizspace{1.3em}
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\begin{logicproof}{1}
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P(x) \lor Q(y) &\prem\\
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P(x)\imp R(z) &\prem\\
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Q(y) \imp R(z) &\prem\\
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\begin{subproof}
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P(x) &$\assum$\\
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R(z) &$\impe2,4$
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\end{subproof}
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\begin{subproof}
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Q(y) &$\assum$\\
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R(z) &$\impe3,6$
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\end{subproof}
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R(z) &$\ore1,4-5,6-7$
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\end{logicproof}
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