# Dictionary Definition

invariant adj

1 unaffected by a designated operation or
transformation

2 persistent in occurrence and unvarying in
nature; "maintained a constant temperature"; "a constant beat";
"principles of unvarying validity"; "a steady breeze" [syn:
changeless, constant, steady, unvarying]

# User Contributed Dictionary

## English

### Adjective

- That does not vary; constant
- That is not affected by a specified operation (especially by a transformation)

#### Synonyms

#### Translations

that does not vary

- Finnish: muuttumaton
- Swedish: oföränderlig

that is not affected by a specified operation

- Finnish: invariantti
- Swedish: invariant

## French

### Adjective

invariant#### Synonyms

### Noun

invariant m- In the context of "physics|mathematics|lang=fr": invariable

### Related terms

# Extensive Definition

Invariant may have several meanings, among which
are:

- Invariant (computer science), an expression whose value doesn't change during program execution
- In computer science, a type in overriding that is neither covariant nor contravariant
- Invariant (mathematics), something unaltered by a transformation, for example: taking a homotopy group functor on the category of topological spaces. Then, homomeomorphic spaces have isomorphic fundamental group. See topological invariant.
- Invariant (music)
- Invariant (physics), meaning that something does not change under a transformation, such as from one reference frame to another
- Writer invariant, property of a text which is similar in all texts of a given author, and different in texts of different authors.
- Invariant Point (physics), A unique condition of temperature, pressure and concentration in a system, which allows a number of phases to coexist in equilibrium.
- Invariant representation (cognitive science), the form or essence of something, an abstraction from particulars
- The Invariant Society, the undergraduate mathematical society of Oxford University

invariant in Czech: Invariant

invariant in German: Invariante

invariant in Italian: Invarianza

invariant in Polish:
Niezmiennik