Abstract
We prove that for every compactum X and every integer n≥2 there are a compactum Z of dim≤n and a surjective UVn-1-map r :Z→X having the property that: for every finitely generated Abelian group G and every integer k≥2 such that dimGX≤k≤n we have dimGZ≤k and r is G-acyclic, or equivalently: for every simply connected CW-complex K with finitely generated homotopy groups such that e-dimX≤K we have e-dimZ≤K and r is K-acyclic. (A space is K-acyclic if every map from the space to K is null-homotopic. A map is K-acyclic if every fiber is K-acyclic.)
Original language | English |
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Pages (from-to) | 101-109 |
Number of pages | 9 |
Journal | Topology and its Applications |
Volume | 135 |
Issue number | 1-3 |
DOIs | |
State | Published - 1 Jan 2004 |
Keywords
- Cell-like and acyclic resolutions
- Cohomological dimension
ASJC Scopus subject areas
- Geometry and Topology