Volume 5, issue 4 (2005)

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ISSN (electronic): 1472-2739
ISSN (print): 1472-2747
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 P is an absolute extensor of X if and only if the real projective plane P2 is an absolute extensor of X (see Theorems 1.2 and 1.5).

Keywords
cohomological, extensional dimensions, projective spaces
Mathematical Subject Classification 2000
Primary: 55M10
Secondary: 54F45
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Publication
Received: 1 June 2005
Accepted: 7 November 2005
Published: 7 December 2005
Authors
Jerzy Dydak
Department of Mathematics
University of Tennessee
Knoxville TN 37996-1300
USA
http://www.math.utk.edu/~dydak/
Michael Levin
Department of Mathematics
Ben Gurion University of the Negev
P.O.B. 653
Be’er Sheva 84105
Israel