An odd inequality sign

  • #1
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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?
 

Answers and Replies

  • #2
HallsofIvy
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<
>
?

I would interpret that as "is not equal to".
 
  • #3
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Is it any of these?

[tex]\lessgtr, \quad
\gtrless,\quad
\lesseqgtr,\quad
\gtreqless,\quad
\lesseqqgtr,\quad
\gtreqqless[/tex]
 
  • #4
353
1
Is it any of these?

[tex]\lessgtr, \quad
\gtrless,\quad
\lesseqgtr,\quad
\gtreqless,\quad
\lesseqqgtr,\quad
\gtreqqless[/tex]
I'd say it'd probably be the second one.
 
  • #5
HallsofIvy
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Again, my best guess is "is not equal to".
 
  • #6
asw
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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.
 

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