Editing Countable set (section)

==References==
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* {{cite book |last1=Tao |first1=Terence |title=Analysis I |date=2016 |publisher=Springer |location=Singapore |isbn=978-981-10-1789-6 |pages=181–210 |edition=Third |chapter-url=https://link.springer.com/chapter/10.1007/978-981-10-1789-6_8 |language=en |chapter=Infinite sets|series=Texts and Readings in Mathematics |volume=37 |doi=10.1007/978-981-10-1789-6_8 }}
{{Wiktionary|countable}}{{Portal bar|Arithmetic|Mathematics}}
{{Number systems}}
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{{Set theory}}

[[Category:Basic concepts in infinite set theory]]
[[Category:Cardinal numbers]]
[[Category:Infinity]]