ThmDex – An index of mathematical definitions, results, and conjectures.
▼ Set of symbols
▼ Alphabet
▼ Deduction system
▼ Theory
▼ Zermelo-Fraenkel set theory
▼ Set
▼ Structure
Definition D21
Algebraic structure
Children
▶ D5071: Algebraic subset structure
▶ D39: Identity element
▶ D537: Left identity element
▶ D538: Right identity element