英语词汇“选言证明”的翻译、意思、用法、释义-英汉汉英双解词典

词汇	选言证明
释义	选言证明 xuǎn yán zhèng míng运用选言直言推理所作的证明。间接证明的一种。以论题为一个选言支，构造一个穷尽该问题一切可能的选言判断，并断定除该选言支外，其他选言支都是假的，从而断定论题是真的。如为了证明电灯突然熄灭是因为灯泡坏了，可以构造选言判断如下：“电灯突然熄灭，或者是因为停电，或者是因为保险丝烧断，或者是因为线路发生故障，或者是因为灯泡坏了。”然后根据事实断定前三个选言支为假，从而断定论题是真的。
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