This article needs additional citations for verification. (March 2024) |
In set theory, a set is called hereditarily countable if it is a countable set of hereditarily countable sets.
Results
editThe inductive definition above is well-founded and can be expressed in the language of first-order set theory.
Equivalent properties
editA set is hereditarily countable if and only if it is countable, and every element of its transitive closure is countable.[1]
See also
editReferences
edit🔥 Top keywords: Akademia e Shkencave e RPS te ShqiperiseAlexandria Ocasio-CortezBilderberg GroupCristiano RonaldoDong XiaowanMinecraftOperation GladioPrimal cutRiot FestStrictly Come Dancing (series 7)Main PageSpecial:SearchUEFA Euro 2024Wikipedia:Featured picturesJulian AssangeWebsiteShifty ShellshockUEFA European ChampionshipGeorgia (country)CleopatraDeaths in 20242024 Copa AméricaMikal BridgesStella AssangeThe Acolyte (TV series)Celine DionJamaal BowmanKalki 2898 ADHouse of the DragonYouTubeGeorge Latimer (New York politician)Copa AméricaInside Out 2Cristiano RonaldoOm BirlaDr DisrespectPhil FodenChelsea Manning2024 NBA draftOpinion polling for the 2024 United Kingdom general electionLoss (comic)Project 2025Elon MuskSteven van de VeldeUEFA Euro 2020Georgia national football teamSabrina CarpenterBill Cobbs.xxx