Concept information
Preferred term
quadric
Definition(s)
-
In mathematics, a quadric or quadric surface (quadric hypersurface in higher dimensions), is a generalization of conic sections (ellipses, parabolas, and hyperbolas). It is a hypersurface (of dimension D) in a (D + 1)-dimensional space, and it is defined as the zero set of an irreducible polynomial of degree two in D + 1 variables; for example, D = 1 in the case of conic sections. When the defining polynomial is not absolutely irreducible, the zero set is generally not considered a quadric, although it is often called a degenerate quadric or a reducible quadric.
(Wikipedia, The Free Encyclopedia, https://en.wikipedia.org/wiki/Quadric)
Broader concept(s)
Narrower concept(s)
Synonym(s)
- quadric hypersurface
- quadric surface
In other languages
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French
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surface quadratique
URI
http://data.loterre.fr/ark:/67375/PSR-MS1LS1CS-W
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