cotriangular space

A cotriangular space is a http://planetmath.org/node/PartialLinearSpacepartial linear space $(P,L)$ in which

• each line contains exactly three points, and

• given a point not on a line, the point is collinear with zero or two points of the line.

Title	cotriangular space
Canonical name	CotriangularSpace
Date of creation	2013-03-22 17:15:34
Last modified on	2013-03-22 17:15:34
Owner	pan (17366)
Last modified by	pan (17366)
Numerical id	9
Author	pan (17366)
Entry type	Definition
Classification	msc 51A05