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Abstract. The abelian group Pext1Z (G, H) of pure extensions has recently attracted the interest of workers in non-commutative topology, especially those using KK-theory, since under minimal hypotheses the closure of zer
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Document Date: 2003-06-29 15:56:58
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Abstract. The abelian group Pext1Z (G, H) of pure extensions has recently attracted the interest of workers in non-commutative topology, especially those using KK-theory, since under minimal hypotheses the closure of zer