14239 | The empty set is usually derived from Separation, but it also seems to need Infinity |

14240 | The empty set is something, not nothing! |

14241 | We don't need the empty set to express non-existence, as there are other ways to do that |

14242 | Maybe we can treat the empty set symbol as just meaning an empty term |

14243 | The unit set may be needed to express intersections that leave a single member |

14199 | Cantor's sets were just collections, but Dedekind's were containers |

14234 | If you only refer to objects one at a time, you need sets in order to refer to a plurality |

14237 | We can use plural language to refer to the set theory domain, to avoid calling it a 'set' |

14245 | Logical truths are true no matter what exists - but predicate calculus insists that something exists |

14246 | If mathematics purely concerned mathematical objects, there would be no applied mathematics |

14247 | Sets might either represent the numbers, or be the numbers, or replace the numbers |