Freedman, Michael H. A conservative Dehn’s lemma. (English) Zbl 0525.57005 Contemp. Math. 20, 121-130 (1983). For the entire collection see [Zbl 0512.00022]. Page: −5 −4 −3 −2 −1 ±0 +1 +2 +3 +4 +5 Show Scanned Page Cited in 1 ReviewCited in 1 Document MSC: 57M35 Dehn’s lemma, sphere theorem, loop theorem, asphericity (MSC2010) 57R42 Immersions in differential topology 53C42 Differential geometry of immersions (minimal, prescribed curvature, tight, etc.) 57M40 Characterizations of the Euclidean \(3\)-space and the \(3\)-sphere (MSC2010) Keywords:Dehn’s lemma; smooth immersion from 2-sphere to Riemannian 3-manifold which realizes minimum area; homotopy 3-cell PDFBibTeX XMLCite \textit{M. H. Freedman}, Contemp. Math. 20, 121--130 (1983; Zbl 0525.57005) Full Text: DOI