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

Binary relation in a cartesian product

  1. Nov 6, 2007 #1
    How many binary relation can be formed from the cartesian product below:
    A = { 1 , 2 } & B = {a }
    i know there are two ordered pairs in this cartesian products A * B.
    i also know that there are 4 binary realtions. could someone please write
    those four relations for me, i am really confused here.
     
  2. jcsd
  3. Nov 6, 2007 #2

    HallsofIvy

    User Avatar
    Staff Emeritus
    Science Advisor

    {(1, a)}, {(2, a)}, {(a, 1)}, and {(a, 2)}.
     
  4. Nov 6, 2007 #3
    I'd imagine, they're actually something more like these: {}, {(1, a)}, {(2, a)}, and {(1, a), (2, a)}...
     
  5. Nov 9, 2007 #4
    thanx. i really apprecite u for this
     
Know someone interested in this topic? Share this thread via Reddit, Google+, Twitter, or Facebook

Have something to add?



Similar Discussions: Binary relation in a cartesian product
  1. Cartesian product (Replies: 7)

  2. The Cartesian Product (Replies: 9)

  3. Cartesian Products (Replies: 7)

Loading...