# Invariant vs Projective - What's the difference?

invariant | projective |

## In context|mathematics|lang=en terms the difference between invariant and projective

is that invariant is (mathematics) unaffected by a specified operation (especially by a transformation) while projective is (mathematics) describing those properties of a figure that are invariant upon projection.

## As adjectives the difference between invariant and projective

is that invariant is not varying; constant while projective is projecting outward.

## As a noun invariant

is an invariant quantity, function etc.

# invariant

## English

### Adjective

(en adjective)
• not varying; constant
• (mathematics) Unaffected by a specified operation (especially by a transformation)
• (computing, programming) Neither covariant nor contravariant.
• #### Synonyms

* (not varying) invariable

#### Derived terms

* class invariant

### Noun

(en noun)
• An invariant quantity, function etc.
• # projective

## English

### Adjective

• projecting outward
• of, relating to, or caused by a projection
• (mathematics) describing those properties of a figure that are invariant upon projection
• ### Derived terms

*projective algebraic manifold *projective collineation *projective cone *projective correlation *projective differential geometry *projective frame *projective general linear group *projective general orthogonal group *projective general unitary group *projective geometry *projective Hilbert space *projective identification *projective line *projective linear group *projective module *projective object *projective plane *projective plane dissection *projective representation *projective set *projective space *projective special orthogonal group *projective special unitary group *projective symplectic group *projective test *projective texture mapping *projective transformation *projective unitary group *projective variety *projective vector field * (l)