Algebraic topology Arrangements of points, flats, hyperplanes Artificial intelligence Automated systems (robots, etc.) Braid groups; Artin groups Classical topics Computer science Control systems Convex and discrete geometry Discrete geometry Discriminantal varieties, configuration spaces Equivariant homotopy theory Fiber spaces and bundles Group theory and generalizations Homotopy groups Homotopy theory Hopf invariants Ljusternik-Schnirelman (Lyusternik-Shnirel'man) category of a space Low-dimensional topology Manifolds and cell complexes None of the above, but in this section Operations and obstructions Proceedings, conferences, collections, etc Rational homotopy theory Relations with graph theory Robotics Sectioning fiber spaces and bundles Special aspects of infinite or finite groups Systems theory; control Topologie