#indirect proof
- Apagogic — Belonging to apagogy or indirect proof, based on reduction to absurdity; a type of structural logical reasoning through which the truth of a thesis is proven by highlighting the false, contradictory, or impossible character of the consequences of the opposite thesis.
- Apagogy — A form of indirect proof through which the truth of a thesis is established by proving the falsity of the contradictory thesis (reduction to absurdity). This inverse structural process consists of provisionally accepting the opposite of the statement we want to prove, then showing that this assumption leads to logically unacceptable, absurd, or impossible consequences.