Dismiss Notice
Join Physics Forums Today!
The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

Quantifiers - does this order matter?

  1. Jun 17, 2011 #1
    Is saying [itex]\exists[/itex]x, [itex]\exists[/itex]y
    the same as saying [itex]\exists[/itex]y, [itex]\exists[/itex]x?
     
  2. jcsd
  3. Jun 17, 2011 #2

    micromass

    User Avatar
    Staff Emeritus
    Science Advisor
    Education Advisor
    2016 Award

    Hi gmmstr827! :smile:

    No, in this case, the order doesn't matter.
     
  4. Jun 17, 2011 #3
    Alright, because the professor I have right now thinks those are two completely different things. He reads it as "there exists an x such that there exists a y (for that specific x)." This is the second time I had the class (it didn't transfer colleges) and my previous professor said they're the same thing.

    Is there a law describing this somewhere?
     
Know someone interested in this topic? Share this thread via Reddit, Google+, Twitter, or Facebook




Similar Discussions: Quantifiers - does this order matter?
  1. Order formula (Replies: 3)

  2. Order of elements (Replies: 4)

  3. Is order = size ? (Replies: 2)

  4. Order of element (Replies: 1)

Loading...