|
|||||
|
|
|
|
|
|
|
|
|
A
characterization of free projective planes
Laurent Siebenmann |
|
Vol. 15 (1965), No. 1, 293–298
|
Abstract |
|
A characterization of free projective planes is given that is more symmetrical than the original definition of M. Hall. It tends to very simple proofs of two fundamental theorems due to M. Hall and L. I. Kopejkina-one being the result that every subplane of a free plane is free. |
Mathematical Subject Classification
Primary: 50.70
|
Milestones
Received: 13 February 1964
Published: 1 March 1965
|
Authors |
| Laurent Siebenmann | |
| Département de Mathématiques Université de Paris-Sud 11 Bâtiment 425 91405 Orsay France |
|
| http://topo.math.u-psud.fr/~lcs/ | |
|
