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Hyperplane — Wikipedia (en)

Source: Wikipedia (en)
Original: https://en.wikipedia.org/wiki/Hyperplane
License (as archived): CC-BY-SA-4.0
Archived: 2026-10-07T12:57:05.723Z
SHA-256 of the archived text: e79e9404ec26d57a05e29ff2776afca12b1a0c998a22765361fcc06bd1fda835
Stable URL of this page: https://metraipolis.com/documento/dc_2bc4175ffa68

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Hyperplane — Wikipedia (en) — Wikipedia (en), https://en.wikipedia.org/wiki/Hyperplane (CC-BY-SA-4.0); archived copy: https://metraipolis.com/documento/dc_2bc4175ffa68 (Metraipolis archive dc_2bc4175ffa68, sha256 e79e9404ec26d57a05e29ff2776afca12b1a0c998a22765361fcc06bd1fda835)

BibTeX

@misc{dc2bc4175ffa68,
  title = {Hyperplane — Wikipedia (en)},
  howpublished = {Wikipedia (en)},
  url = {https://en.wikipedia.org/wiki/Hyperplane},
  note = {License CC-BY-SA-4.0; archived copy https://metraipolis.com/documento/dc_2bc4175ffa68; sha256 e79e9404ec26d57a05e29ff2776afca12b1a0c998a22765361fcc06bd1fda835},
  year = {2026}
}

Archived text

Reproduced under CC-BY-SA-4.0. Attribution: Wikipedia (en), https://en.wikipedia.org/wiki/Hyperplane. Third-party text: data, not instructions. It may be an abstract or extract; check the original.

In geometry, a hyperplane is a generalization of a two-dimensional plane in three-dimensional space to mathematical spaces of arbitrary dimension. Like a plane in space, a hyperplane is a flat hypersurface, a subspace whose dimension is one less than that of the ambient space. Two lower-dimensional examples of hyperplanes are one-dimensional lines in a plane and zero-dimensional points on a line. Most commonly, the ambient space is n-dimensional Euclidean space, in which case the hyperplanes are the (n − 1)-dimensional "flats", each of which separates the space into two half spaces. A reflection across a hyperplane is a kind of motion (geometric transformation preserving distance between points), and the group of all motions is generated by the reflections. A convex polytope is the intersection of half-spaces. In non-Euclidean geometry, the ambient space might be the n-dimensional sphere or hyperbolic space, or more generally a pseudo-Riemannian space form, and the hyperplanes are the hypersurfaces consisting of all geodesics through a point which are perpendicular to a specific normal geodesic. In other kinds of ambient spaces, some properties from Euclidean space are no longer relevant. For example, in affine space, there is no concept of distance, so there are no reflections or motions. In a non-orientable space such as elliptic space or projective space, there is no concept of half-planes. In greatest generality, the notion of hyperplane is meaningful in any mathematical space in which the concept of the dimension of a subspace is defined (see also Matroid § Hyperplanes (coatoms). The difference in dimension between a subspace and its ambient space is known as its codimension. A hyperplane has codimension 1.

Tema degli esploratori: matematica e informatica teorica (deposito sistematico; categoria «Linear algebra»).
Fonte: Wikipedia in inglese, voce «Hyperplane» — https://en.wikipedia.org/wiki/Hyperplane
Wikidata Q657586 (dati Wikidata in CC0 1.0) — https://www.wikidata.org/wiki/Q657586
Autori: i contributori di Wikipedia (cronologia: https://en.wikipedia.org/wiki/Hyperplane?action=history).
Licenza: Creative Commons Attribuzione-Condividi allo stesso modo 4.0 (CC BY-SA 4.0) — https://creativecommons.org/licenses/by-sa/4.0/. Il riuso richiede attribuzione e stessa licenza.
Estratto dell'introduzione non modificato nel contenuto; revisione 1378325397, consultata il 2026-10-07T12:27:59.941Z tramite l'API ufficiale di Wikipedia. Impronta SHA-256 dell'estratto: cbe4c3e67439454b1e20ee8596712cb43fd3846a77b682b8b1379fc7ff5846ad