Exact identity
- Category
- STANDARD MATHEMATICS
- Definition
- A mathematically exact equality derived from stated assumptions rather than a numerical approximation.
- Math Level
- GENERAL
Exact identity
An exact identity is an equality that follows mathematically and holds throughout its stated domain, rather than being an approximation or numerical fit.
Exact identities can remain valid even when a conjecture or interpretation built around them later fails.
See also: proof, numerical evidence. .