3 ms·

Don't forget zero!

• rramadass 1y ago
  The set Z includes zero. Only when annotated eg. Z+, Z* etc. (often differently by different authors) are various subsets denoted.
  • MaxBarraclough 1y ago
    I'm aware ℤ includes zero, your definition set of all positive and negative integers excludes zero.
    • rramadass 1y ago
      That wasn't a definition but a comment since zero is implicit in Z unless stated otherwise.