Cylinder conjecture for connected choice in dimension two
Cylinder conjecture for connected choice in dimension two
Let \rm\sffamily CC denote connected choice for non-empty connected closed subsets of . For a multi-valued operation , write for the product with the identity operation, and write for strong Weihrauch reducibility. An operation is a cylinder when . Cylinder conjecture. Connected choice in dimension two is not a cylinder:
The paper proves that connected choice in dimension one is not a cylinder and notes that dimensions at least three are cylinders via their equivalence with closed choice on the unit interval. Thus dimension two is the only unresolved case.
Sources & referencesView supporting material
Primary source
Vasco Brattka, Stéphane Le Roux, Joseph S. Miller and Arno Pauly, “Connected Choice and the Brouwer Fixed Point Theorem”, arXiv:1206.4809 (2018).
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