continuum hypothesis
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hypothesis that no set has a cardinality between that of the integers and that of the real numbers
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Encyclopedic overview
In mathematics, specifically set theory, the continuum hypothesis (abbreviated CH) is a hypothesis about the possible sizes of infinite sets. It states:
There is no set whose cardinality is strictly between that of the integers and the real numbers.
Excerpted from Wikipedia’s “continuum hypothesis” article, available under the CC BY-SA 4.0 licence.