# proper subset

Let $S$ be a set and let $X\subset S$ be a subset. We say $X$ is a proper subset^{} of $S$ if $X\ne S$.

Title | proper subset |
---|---|

Canonical name | ProperSubset |

Date of creation | 2013-03-22 11:53:28 |

Last modified on | 2013-03-22 11:53:28 |

Owner | djao (24) |

Last modified by | djao (24) |

Numerical id | 7 |

Author | djao (24) |

Entry type | Definition |

Classification | msc 03E20 |

Classification | msc 03B22 |

Classification | msc 03-00 |

Classification | msc 03-01 |