57Qxx PL-topology

57Q05  General topology of complexes
57Q10  Simple homotopy type, Whitehead torsion, Reidemeister-Franz
               torsion, etc., See also {19B28}
57Q12  Wall finiteness obstruction for CW-complexes
57Q15  Triangulating manifolds
57Q20  Cobordism
57Q25  Comparison of PL-structures: classification, Hauptvermutung
57Q30  Engulfing
57Q35  Embeddings and immersions
57Q37  Isotopy
57Q40  Regular neighborhoods
57Q45  Knots and links (in high dimensions), {For the
               low-dimensional case, See 57M25}
57Q50  Microbundles and block bundles, See also {55R60, 57N55}
57Q55  Approximations
57Q60  Cobordism and concordance
57Q65  General position and transversality
57Q91  Equivariant PL-topology
57Q99  None of the above but in this section