All two dimensional links are null homotopic
Author:
Publisher
Mathematical Sciences Publishers
Subject
Geometry and Topology
Link
http://msp.org/gt/1999/3-1/gt-v3-n1-p10-s.pdf
Reference15 articles.
1. Lecture Notes in Mathematics;Bousfield,1972
2. Link concordance invariants and homotopy theory
3. Homotoping ɛ-Maps to Homeomorphisms
4. Princeton Mathematical Series;Freedman,1990
5. Spheres May Link Homotopically in 4-Space
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2. Homotopy versus isotopy: Spheres with duals in 4-manifolds;Duke Mathematical Journal;2022-02-01
3. Link concordances as surfaces in 4-space and the 4-dimensional Milnor invariants;Indiana University Mathematics Journal;2022
4. On non‐orientable surfaces embedded in 4‐manifolds;Journal of Topology;2021-05-10
5. The group of disjoint 2-spheres in 4-space;Annals of Mathematics;2019-11-01
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