1. Limited time only! Sign up for a free 30min personal tutor trial with Chegg Tutors
    Dismiss Notice
Dismiss Notice
Join Physics Forums Today!
The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

Abstract Algebra question

  1. Jun 6, 2007 #1
    This question links to a former discussion on the board. I'm confused regarding this thread:

    https://www.physicsforums.com/showthread.php?t=3622"

    Specifically, towards the end of the thread, the asker states (in regards to the union notation originally cited):

    "....if we say that x is an element of the union of those sets, then we know x is an element of at least one of those sets. "

    I thought the "or" conditional of the union meant that one (and only one) match occurs for x for the notation to be true. I could be wrong....:biggrin:
     
    Last edited by a moderator: Apr 22, 2017
  2. jcsd
  3. Jun 6, 2007 #2
    Nope. "Or" always means non-exclusive or.
     
  4. Jun 6, 2007 #3
    Got it, thanks....
     
Share this great discussion with others via Reddit, Google+, Twitter, or Facebook