# Equi-affine plane

From Encyclopedia of Mathematics

An affine plane in which the area of a parallelogram is invariant with respect to the affine unimodular group of transformations.

#### Comments

See also the references to Equi-affine geometry.

**How to Cite This Entry:**

Equi-affine plane. L.A. Sidorov (originator),

*Encyclopedia of Mathematics.*URL: http://www.encyclopediaofmath.org/index.php?title=Equi-affine_plane&oldid=14641

This text originally appeared in Encyclopedia of Mathematics - ISBN 1402006098