The square bracket polarized partition characterization of the selection property S₁(Ω, Ω)
The square bracket polarized partition characterization of the selection property S₁(Ω, Ω)
Let be a topological space. Write
when the square bracket polarized partition relation holds for the families of -covers of , with a positive integer. The space has the selection property if, for every sequence of members of , one can select one member from each so that the selected family belongs to .
Square bracket polarized partition conjecture. If satisfies
for any positive integer , then has the property .
The conjecture asks whether this square bracket polarized partition relation characterizes the selection property for topological spaces. The supplied text does not state whether the assertion is known or unresolved.
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Sources & referencesView supporting material
Primary source
Marion Scheepers, “Ramsey Theory and the Borel Conjecture”, arXiv:1912.03796 (2019).
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