Uncountable sets and an infinite real number game
classification
🧮 math.HO
math.GN
keywords
gameuncountableinfinitefactgiveintervalmeansmust
read the original abstract
We give a short proof of the well-known fact that the unit interval [0,1] is uncountable by means of a simple infinite game. We also show using this game that a (non-empty) perfect subset of [0,1] must be uncountable.
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