Institut Mittag-Leffler The Royal Swedish Academy of Sciences

Reports Institut Mittag-Leffler
ISSN: 1103-467X
ISRN: IML-R

On Whitehead Precovers
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Preprint series: Mathematical Logic - 2000/2001, No. 06

MSC 2000

03E35 Consistency and independence results

18G15 Ext and Tor, generalizations, Künneth formula

20K20 Torsion-free groups, infinite rank

Keywords: Precover, Whitehead group, ladder system, uniformization, Ext