前件

The name of the pictureThe name of the pictureThe name of the pictureClash Royale CLAN TAG#URR8PPP




前件（antecedent），亦稱前提，是假言命题的前半部分。[1]


例子：


  • 如果P，那么Q。

这是假言命题的标准逻辑公式。在这种情况下，前件是P。[2]


  • 如X是人，则X是必死的。

X是人是这个命题的前件。


  • 如果人类已经在月亮上行走，那么我是法国国王。

这里的人类已经在月亮上行走是前件。



註釋




  1. ^ See Conditional sentence.


  2. ^ Sets, Functions and Logic - An Introduction to Abstract Mathematics, Keith Devlin, Chapman & Hall/CRC Mathematics, 3rd ed., 2004



参见


  • 后件

  • 实质条件

  • 充分条件

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