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.
The act of demanding with authority, and compelling to pay or yield; compulsion to give or furnish; a levying by force
extortion.
That which is exacted; a severe tribute; a fee, reward, or contribution, demanded or levied with severity or injustice.