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De Morgan ê hoat-chek
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De Morgan ê hoat-chek (Eng. De Morgan's laws) sī koan-î bīng-tē lô-chi̍p ê chi̍t-tùi hoat-chek, i hō· Eng-kok ê sò·-ha̍k-ka Augustus de Morgan hoat-hiān.
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De Morgan ê hoat-chek (Eng. De Morgan's laws) sī koan-î bīng-tē lô-chi̍p ê chi̍t-tùi hoat-chek, i hō· Eng-kok ê sò·-ha̍k-ka Augustus de Morgan hoat-hiān.