In the expression of sets: B={X [itex]\in[/itex] A:|X|<3} the expression is saying that B is a set that contains at most 3 sets X that belongs to A, right?(adsbygoogle = window.adsbygoogle || []).push({});

How do we say, B is a set that contains elements of X that belongs to A, and all X elements contains at most 3 x elements (the cardinality of X is at most 2). For example, B={{1,2},{3}}. And not, B={{1,2,3}}

**Physics Forums - The Fusion of Science and Community**

Join Physics Forums Today!

The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

# Expressing sets

Loading...

Similar Threads - Expressing sets | Date |
---|---|

I Correct notation for some functional expressions | Feb 17, 2018 |

I Need Aproximate expressions for : ln(x) and 1/ln(x) Thanks | Nov 1, 2017 |

B How to build an equation or expression? | Jul 15, 2017 |

Algorithm or expression to put n elements in k sets | Apr 24, 2013 |

**Physics Forums - The Fusion of Science and Community**