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!

An odd inequality sign

  1. Aug 17, 2011 #1
    I saw this rather odd symbol of the the greater sign on top of the less sign in my lecture notes. I am wondering if there is a name for this symbol and if signifies 'equal to' as well?
     
  2. jcsd
  3. Aug 17, 2011 #2

    HallsofIvy

    User Avatar
    Staff Emeritus
    Science Advisor

    <
    >
    ?

    I would interpret that as "is not equal to".
     
  4. Aug 17, 2011 #3
    Is it any of these?

    [tex]\lessgtr, \quad
    \gtrless,\quad
    \lesseqgtr,\quad
    \gtreqless,\quad
    \lesseqqgtr,\quad
    \gtreqqless[/tex]
     
  5. Aug 17, 2011 #4
    I'd say it'd probably be the second one.
     
  6. Aug 18, 2011 #5

    HallsofIvy

    User Avatar
    Staff Emeritus
    Science Advisor

    Again, my best guess is "is not equal to".
     
  7. Aug 20, 2011 #6

    asw

    User Avatar

    It's an abbreviation of < or >, the alternatives being explained or elaborated on nearby.

    You could write: a≶b≶c, which means that either a<b<c or a>b>c.
    Or you could write something like: |x|=±x if x≷0.
    The upper level is one case, the lower level is the other case.

    It is rarely used. Different cases are usually put on different lines with braced conditions.
     
Know someone interested in this topic? Share this thread via Reddit, Google+, Twitter, or Facebook




Similar Discussions: An odd inequality sign
  1. Even or odd? (Replies: 16)

  2. Decimal to odds (Replies: 4)

  3. An inequality (Replies: 11)

  4. Lotto odds (Replies: 1)

  5. Even or odd (Replies: 1)

Loading...