# Centro-affine geometry

From Encyclopedia of Mathematics

The branch of affine geometry in which one studies invariants of centro-affine transformations: . Centro-affine transformations leave one point (the centre) fixed. In centro-affine geometry there is complete duality: To every proposition concerning points corresponds the same proposition concerning hyperplanes.

**How to Cite This Entry:**

Centro-affine geometry. L.A. Sidorov (originator),

*Encyclopedia of Mathematics.*URL: http://www.encyclopediaofmath.org/index.php?title=Centro-affine_geometry&oldid=12060

This text originally appeared in Encyclopedia of Mathematics - ISBN 1402006098