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Can sonbody explain to me what does set notation of

$$ C_NM\\ $$

means.

The C in given notation is not letter C, it is some kind of very narrow C. I Could not find the alternative, to write.

Thanks

depecheSoul
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    Complement of $M$ with respect to $N$. See http://en.wikipedia.org/wiki/Complement_%28set_theory%29 and http://upload.wikimedia.org/math/f/e/7/fe75ee3c3e1f30113d216dacfd04379c.png – Sigur Feb 11 '14 at 12:37
  • You may enjoy finding the symbol at http://detexify.kirelabs.org . – lhf Feb 11 '14 at 12:57

1 Answers1

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You probably mean $\complement_N M$, which I first saw in Bourbaki.

$\complement_N M$ is the complement of $M$ with respect to $N$, also known as $N \setminus M$.

$\complement_N M$ is written as \complement_N M in $\TeX$.

lhf
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