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Low Dimensional Topology

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2 domain-specific abstractions whose origin domain is Low Dimensional Topology.

  • Cyclic surgery theorem — A three-manifold theorem bounding the distance between two Dehn fillings of an irreducible boundary-torus manifold when both filled manifolds have cyclic fundamental group.
  • Train track (mathematics) — A smoothly branched graph embedded in a surface that carries measured laminations through compatible nonnegative branch weights.