A statement that contradicts itself, i.e., a statement that claims that the same thing is true and that it is false at the same time and in the same senses of the terms.
A logical inconsistency among two or more elements or propositions.
The act of contradicting.
A proposition that is false for all values of its propositional variables or Boolean atoms.
A phrase or expression in which the component words contradict one another, often unintentionally, or are claimed to do so when seen from a particular point of view.