Abstract
We study point-separating function sets that are minimal with respect to the property of being separating. We first show that for a compact space X having a minimal separating function set in Cp(X) is equivalent to having a minimal separating collection of functionally open sets in X. We also identify a nice visual property of X2 that may be responsible for the existence of a minimal separating function family for X in Cp(X). We then discuss various questions and directions around the topic.
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References
A. Arhangelskii, Topological Function Spaces, Vol. 78 of Math. Appl. (Kluwer Academic, Dordrecht, 1992).
R. Engelking, General Topology (PWN, Warszawa, 1977).
R. Buzyakova and O. Okunev, “A note on separating function sets,” Lobachevskii J. Math. 39 (2), 173–178 (2018).
M. Dzamonja and I. Juhasz, “CH, a problem of Rolewicz and bidiscrete systems,” Topol. Appl. 158, 2458–2494 (2011).
C. S. Hida, “Two Cardinal inequalities about bidiscrete systems,” Topol. Appl. 212, 71–80 (2016).
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(Submitted by S. N. Tronin)
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Buzyakova, R., Okunev, O. A Note on Minimal Separating Function Sets. Lobachevskii J Math 40, 149–155 (2019). https://doi.org/10.1134/S1995080219020057
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DOI: https://doi.org/10.1134/S1995080219020057