“negation”的概念、定义、习题解题方法及翻译-数学辞典

单词

negation

释义

negation

If p is a statement, then the statement ‘not p', denoted by ¬p, is the negation of p. It states, in some suitable wording, the opposite of p. For example, if p is ‘It is raining', then ¬p is ‘It is not raining'; if p is ‘r > 2', then ¬p is ‘r ≤2'. If p is true then ¬p is false, and vice versa. So the truth table of ¬p is:

See De Morgan's laws.

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