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 left-hand page of a book of a script which reads from left to right, usually having an even page number.
The back side of a flat object which is to be examined visually, as for reading, such as a sheet, leaf, coin or medal;