Geometric Topology

Low-dimensional topology, knots, 3-manifolds, and mapping class groups.


foundation tier

Geometric Topology. Low-dimensional topology, knots, 3-manifolds, and mapping class groups.

Foundations and canonical references

The standard treatments of geometric topology approach the subject from complementary angles. Thurston, Three-Dimensional Geometry and Topology (1997) is the anchor reference for the subject and lays out the core definitions, theorems, and worked examples that practitioners return to.

Open methodological questions for geometric topology include sharpening the bridges between foundational theory and computational practice, extending classical results to broader or more structured settings, and integrating the techniques surveyed above with adjacent mathematical disciplines. The references listed in this page are the entry points that current work builds on.

Prerequisites

Sources

  • textbook · primary · 1997
    Three-Dimensional Geometry and Topology
    thurston-1997

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Explore

  1. 01

    Knot Theory

    Knot invariants, Jones and HOMFLY polynomials, and Khovanov homology.

  2. 02

    3-Manifolds and Geometrization

    Thurston's geometrization and the Perelman proof.

  3. 03

    4-Manifold Topology

    Smooth and topological 4-manifolds, gauge theory, and the 11/8 conjecture.

  4. 04

    Mapping Class Groups

    Surface diffeomorphisms, Teichmüller theory, and Nielsen–Thurston classification.

  5. 05

    Heegaard Floer Homology

    Ozsváth–Szabó invariants of 3- and 4-manifolds.

  6. 06

    Symplectic and Contact Topology

    Floer homology, contact homology, and Gromov nonsqueezing.


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