ein Lehrsatz.
ETYM Latin theorema, Greek thea a sight, speculation, theory, theorem: cf. French théorčme. Related to Theory.
Mathematical proposition that can be deduced by logic from a set of axioms (basic facts that are taken to be true without proof). Advanced mathematics consists almost entirely of theorems and proofs, but even at a simple level theorems are important.
1. A proposition deducible from basic postulates.
2. An idea accepted as a demonstrable truth.