Geometry Projective geometry and linear incidence geometry Concept
Quadric
Summary
A quadric is the set of points of an affine or projective space where a polynomial of degree vanishes. Conics in the plane and quadric surfaces such as spheres, ellipsoids and hyperboloids in space are quadrics. In projective geometry, a quadric is given by a quadratic form. The points, lines and subspaces lying on a non-degenerate quadric form a polar space.
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| Tag | Q3Q4FF23VG |
|---|---|
| URI | m2://Q3Q4FF23VG |
| Kind | concept |
| Writing | W0 stub |
| MSC | 51N15, 51A50, 14J70 |
| Same as |
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