9470 | Modal logic is not an extensional language |

13418 | The old problems with the axiom of choice are probably better ascribed to the law of excluded middle |

9468 | On the substitutional interpretation, '(∃x) Fx' is true iff a closed term 't' makes Ft true |

9469 | Substitutional existential quantifier may explain the existence of linguistic entities |

17447 | Parsons says counting is tagging as first, second, third..., and converting the last to a cardinal |

18201 | General principles can be obvious in mathematics, but bold speculations in empirical science |

13419 | If functions are transfinite objects, finitists can have no conception of them |

13417 | If a mathematical structure is rejected from a physical theory, it retains its mathematical status |