# Osculating quadric

From Encyclopedia of Mathematics

The surface of the second order that has second-order contact with a given surface at a given point. Examples are the Darboux quadric and the Lie quadric.

**How to Cite This Entry:**

Osculating quadric. V.S. Malakhovskii (originator),

*Encyclopedia of Mathematics.*URL: http://encyclopediaofmath.org/index.php?title=Osculating_quadric&oldid=12067

This text originally appeared in Encyclopedia of Mathematics - ISBN 1402006098