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作者单位:Pekka Pankka (1) Kai Rajala (1) Jang-Mei Wu (2)
1. Department of Mathematics and Statistics, University of Jyv盲skyl盲, P.O. Box 35, 40014, 聽Jyv盲skyl盲, Finland 2. Department of Mathematics, University of Illinois, 1409 West Green Street, Urbana, IL聽, 61822, USA
ISSN:2195-3724
文摘
We study the existence of geometrically controlled branched covering maps from \(\mathbb R^3\) to open \(3\) -manifolds or to decomposition spaces \(\mathbb {S}^3/G\) , and from \(\mathbb {S}^3/G\) to \(\mathbb {S}^3\) .