# Equivalence

[ih-kwiv-uh-luh ns or for 3, ee-kwuh-vey-luh ns] /ɪˈkwɪv ə ləns or for 3, ˌi kwəˈveɪ ləns/

**noun**, Also, (for defs 1, 2).

1.

the state or fact of being equivalent; equality in value, force, significance, etc.

2.

an instance of this; an equivalent.

3.

Chemistry. the quality of having equal valence.

4.

Logic, Mathematics.

**adjective**

5.

(of a logical or mathematical relationship) reflexive, symmetrical, and transitive.

/ɪˈkwɪvələns/

**noun**

1.

the state of being equivalent or interchangeable

2.

(maths, logic)

n.

1540s, from French équivalence, from Medieval Latin aequivalentia, from aequivalentem (see equivalent). Related: Equivalency (1530s).

Tagged: e

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- Equivalence-class
noun, Mathematics. 1. the set of elements associated by an equivalence relation with a given element of a set.

- Equivalence class partitioning
testing A software testing technique that involves identifying a small set of representative input values that invoke as many different input conditions as possible. For example, for binary search the following partitions exist: inputs that do or do not conform to pre-conditions, Inputs where the key element is or is not a member of the […]

- Equivalence partitioning
equivalence class partitioning

- Equivalence-relation
noun, Mathematics. 1. a relation that is reflexive, symmetrical, and transitive, as equality. noun 1. (logic, maths) a relation that is reflexive, symmetric, and transitive: it imposes a partition on its domain of definition so that two elements belong to the same subset if and only if the relation holds between them