#### Volume 5, issue 4 (2005)

 Recent Issues
Author Index
 The Journal About the Journal Editorial Board Subscriptions Editorial Interests Editorial Procedure Submission Guidelines Submission Page Ethics Statement ISSN (electronic): 1472-2739 ISSN (print): 1472-2747 To Appear Other MSP Journals
Extensions of maps to the projective plane

### Jerzy Dydak and Michael Levin

Algebraic & Geometric Topology 5 (2005) 1711–1718
 arXiv: math.GT/0410370
##### Abstract

It is proved that for a $3$–dimensional compact metrizable space $X$ the infinite real projective space $ℝ{P}^{\infty }$ is an absolute extensor of $X$ if and only if the real projective plane $ℝ{P}^{2}$ is an absolute extensor of $X$ (see Theorems 1.2 and 1.5).

##### Keywords
cohomological, extensional dimensions, projective spaces
Primary: 55M10
Secondary: 54F45