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What is the LaTeX syntax for Karp reduction (i.e. the lesser than sign with curved lines instead of straight lines)?

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Please see this: tex.stackexchange.com/questions/14/how-to-look-up-a-math-symbol and I think you're looking for \succ or \prec and their friends: \succeq,\preceq –  Seamus Aug 8 '11 at 10:34
    
@Seamus: Thanks. Could u post this as an answer so that this gets an answer? –  user1876 Aug 8 '11 at 10:38
    
Purely for making it easy for people to find that canonical symbol-lookup question, I'm voting to close as a duplicate. –  Andrew Stacey Aug 8 '11 at 11:05
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2 Answers

up vote 4 down vote accepted

In future, there are a number of ways to look up a symbol.

The "bendy inequality" symbols are:

\succ, \prec, \succeq and \preceq.

bendy inequalities

If you like the eq variants to bend too, then (with the help of the amssymb package you can:

$\succ \prec \succeq \preceq \succcurlyeq \preccurlyeq$

more bendy inequalities

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Aesthetically, you may also prefer (as I do) the symbols \succcurlyeq and \preccurlyeq to their "non-curly" equivalents. –  Niel de Beaudrap Aug 8 '11 at 10:48
    
@Niels thanks for that! I couldn't remember what the command for them was. –  Seamus Aug 8 '11 at 10:56
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Me neither, so I DeTeXified it. ;-) –  Niel de Beaudrap Aug 8 '11 at 10:58
    
@Seamus: Thanks. I have used DeTexify in the past but I completely forgot about it. DeTexify goes into my bookmark tab now. –  user1876 Aug 8 '11 at 11:15
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\propto is Karp Reduction in LaTeX.

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