ThmDex – An index of mathematical definitions, results, and conjectures.

▼	Set of symbols
▼	Alphabet
▼	Deduction system
▼	Theory
▼	Zermelo-Fraenkel set theory
▼	Set
▼	Binary cartesian set product
▼	Binary relation
▼	Map
▼	Function
▼	Strict asymptotic ordering relation
▼	Asymptotic ordering relation

Definition D3

Asymptotic equality relation