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http://dx.doi.org/10.4134/CKMS.2005.20.2.359

CHARACTERIZATION OF PHANTOM GROUPS  

LEE, DAE-WOONG (Department of Mathematics Chonbuk National University)
Publication Information
Communications of the Korean Mathematical Society / v.20, no.2, 2005 , pp. 359-364 More about this Journal
Abstract
We give another characteristic feature of the set of phantom maps: After constructing an isomorphism between derived functors, we show that the set of homotopy classes of phantom maps could be restated as the extension product of subinverse towers induced by the given inverse towers.
Keywords
derived limit; phantom map;
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