reflection

This entry is about the concept in geometry/physics/linear algebra. For the concept in category theory see

reflective subcategory

Given a hyperplane? in a Euclidean space, then *reflection* at that hyperplane is the operation that sends each point to its mirror image at that hyperplane, the result of translating the point in the direction perpendicular to the hyperplane by twice its distance to the hyperplane.

Last revised on August 1, 2018 at 08:18:06. See the history of this page for a list of all contributions to it.