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 ($4  < n < \infty$)
57N16 Geometric structures on manifolds [See also 57M50]
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

Version of December 15, 1998