true
/ false
/ unknown
という3値を持つ論理x | NOT x |
true | false |
unknown | unknown |
false | true |
\ | true | unknown | false |
true | true | unknown | false |
unknown | unknown | unknown | false |
false | false | false | false |
\ | true | unknown | false |
true | true | true | true |
unknown | true | unknown | unknown |
false | true | unknown | false |