Alexander duality, gropes and link homotopy.
Krushkal, Vyacheslav S., Teichner, Peter (1997)
Geometry & Topology
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Displaying similar documents to “All two dimensions links are null homotopic.”
Alexander duality, gropes and link homotopy.
Fibring the complement of the Fenn-Rolfsen link.
Roger Fenn (1989)
Publicacions Matemàtiques
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In this note it is shown that the complement of the singular linked spheres in four dimensions defined by Fenn and Rolfsen can be fibred by tori. Also a symmetry between the two components is revealed which shows that the image provides an example of a Spanier-Whitehead duality. This provides an immediate proof that the α-invariant is non zero.
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Algebraic & Geometric Topology
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Habiro, Kazuo (2000)
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Algebraic & Geometric Topology
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