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I need to know, if it's possible, how I can write a unique "less AND greater than" symbol in LaTeX: for example X >< 5.

lockstep
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  • Isn't it <> instead of ><? –  Feb 11 '13 at 10:27
  • Sorry, my mistake, I'll write on tex.stack the next time... However, I was wrong to write: I wanted to say <>... –  Feb 11 '13 at 10:33
  • Do you mean \times? –  Feb 11 '13 at 12:50
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  • I'd use \neq. Mathematically it has the same meaning if I say x =\= 5. – Count Zero Feb 11 '13 at 14:43

1 Answers1

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That's not possible (unless you write the greater than symbol followed by the less than symbol).

You can find a comprehensive list of LaTeX symbols here.

EDIT:

For something that looks like an horizontal X, check out \times and \openJoin in the document.

For one over the other, check \lessgtr, from comments I think that's what you're looking for : enter image description here

Phelype Oleinik
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alestanis
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  • mmm are you sure? Because I red something like that in some books in the past... However thanks a lot for the link... It's wonderful! –  Feb 11 '13 at 10:34
  • I found one that looks like a > on top of a < but that's all... You don't like how >< looks like? Are you looking for something more like an horizontal X? –  Feb 11 '13 at 10:47
  • No no... I'm looking for something like a > on top of a <... sorry, but I think that I explained that very bad... How can I do that? –  Feb 11 '13 at 10:55
  • @Daniele Check my edit, is that it? –  Feb 11 '13 at 10:57
  • Perfect @alestanis, that's \lessgrt! Thanks a lot! But it doesn't work: which packages I have to use? I have amsmath,amsfonts,amsthm... –  Feb 11 '13 at 11:06
  • @Daniele Great! You're welcome :) –  Feb 11 '13 at 11:06
  • Sorry, but it doesn't work: which packages I have to use? I have amsmath,amsfonts,amsthm... –  Feb 11 '13 at 11:12
  • It's in page 24 of the document, I think you need mathabx – alestanis Feb 11 '13 at 12:38
  • @Daniele: try \newsymbol\lessgtr 1337 after loading amsmath and amsfonts. :) – Paulo Cereda Feb 11 '13 at 12:48
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    The needed package is amssymb – egreg Feb 11 '13 at 12:58
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    The link is broken – yarchik Oct 17 '17 at 14:48