57Nxx Topological manifolds

57N05  Topology of $E^2$, $2$-manifolds
57N10  Topology of general $3$-manifolds, See also {57Mxx}
57N12  Topology of $E^3$ and $S^3$, See also {57M40}
57N13  Topology of $E^4$, $4$-manifolds, See also {14Jxx, 32Jxx}
57N15  Topology of $E^n$, $n$-manifolds ($4 \less n \less \infty$)
57N17  Topology of topological vector spaces
57N20  Topology of infinite-dimensional manifolds, See Also {
               58Bxx}
57N25  Shapes, See also {54C56, 55P55, 55Q07}
57N30  Engulfing
57N35  Embeddings and immersions
57N37  Isotopy and pseudo-isotopy
57N40  Neighborhoods of submanifolds
57N45  Flatness and tameness
57N50  $S^{n-1}\subset E^n$, Schoenflies problem
57N55  Microbundles and block bundles, See also {55R60, 57Q50}
57N60  Cellularity
57N65  Algebraic topology of manifolds
57N70  Cobordism and concordance
57N75  General position and transversality
57N80  Stratifications
57N99  None of the above but in this section