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How to make the symbols for interior product (a.k.a. contraction)? The best I've been able to come up with is \mathrel{\llcorner} (or \lrcorner). Any other suggestions?

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Martin's answer was not satisfactory for me. The resulting symbol does not match the interior product symbol I'm familiar with from my texts. The symbol should be fairly large, outlining the bottom-most and right-most edge of the glyph's rendering box. Can anyone give another answer? – Joe Hannon Dec 19 '11 at 19:17

2 Answers

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MnSymbol package has \invneg symbol, which is most likely what you're looking for. Hope this helps.

\documentclass{article}
\usepackage{mnsymbol}

\begin{document}
\[\invneg\]
\end{document}
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On an unrelated note, detexify wasn't able to recognize this particular symbol, nor did it suggest anything even remotely similar. It can be found, however, in the CTAN comprehensive symbol list. – Martin Tapankov Sep 26 '10 at 18:58
I know, I tried detexify too! Anyway, \invneg and \invbackneg look fine. Thanks! – Hans Lundmark Sep 26 '10 at 19:26
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I believe you are looking for

\rfloor

as in

X\rfloor\alpha
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Not quite. The contraction symbol has a long horizontal line and a short vertical line, whereas the floor symbol is the other way arund... – Hans Lundmark Sep 27 '10 at 7:49

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