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< | 57-XX | 57Nxx >
57-XX Manifolds and cell complexes {For complex manifolds, see 32Qxx}
57Mxx Low-dimensional topology
57M05   Fundamental group, presentations, free differential calculus
57M07   Topological methods in group theory
57M10   Covering spaces
57M12   Special coverings, e.g. branched
57M15   Relations with graph theory [See also 05Cxx]
57M20   Two-dimensional complexes
57M25   Knots and links in $S^3$ {For higher dimensions, see 57Q45}
57M27   Invariants of knots and 3-manifolds
57M30   Wild knots and surfaces, etc., wild embeddings
57M35   Dehn's lemma, sphere theorem, loop theorem, asphericity
57M40   Characterizations of $E^3$ and $S^3$ (PoincarĂ© conjecture) [See also 57N12]
57M50   Geometric structures on low-dimensional manifolds
57M60   Group actions in low dimensions
57M99   None of the above, but in this section
< | 57-XX | 57Nxx >
 
 
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