ThmDex – An index of mathematical definitions, results, and conjectures.
▼ Set of symbols
▼ Alphabet
▼ Deduction system
▼ Theory
▼ Zermelo-Fraenkel set theory
▼ Set
▼ Structure
▼ Algebraic structure
▼ Identity element
▼ Inverse element
▼ Invertible element
Definition D6173
Multiplicatively invertible real number