A set in formed by translating an affine subspace or by the intersection of a set of hyperplanes.
Flat
See also
Associative, Faithfully Flat Module, Flat Connection, Flat Manifold, Flat Module, Flat Norm, Hyperplane, Plane-Plane IntersectionExplore with Wolfram|Alpha
Cite this as:
Weisstein, Eric W. "Flat." From MathWorld--A Wolfram Web Resource. https://mathworld.wolfram.com/Flat.html