LaTeX forum ⇒ Fonts & Character SetsIdentity Matrix Symbol (double ones)

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haaj86
Posts: 21
Joined: Mon Apr 06, 2009 11:18 pm

Identity Matrix Symbol (double ones)

Postby haaj86 » Sat Aug 21, 2010 1:40 pm

Hi, how to type the identity matrix symbol (the double ones). I don't mean the
  1. \mathbb{I}
symbol.

I can't also find it in the The Comprehensive LATEX Symbol List.

Please help!
Last edited by haaj86 on Sat Aug 21, 2010 5:29 pm, edited 1 time in total.

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gmedina
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Joined: Wed Jul 11, 2007 11:45 pm
Location: Colombia

Postby gmedina » Sat Aug 21, 2010 3:30 pm

Hi,

which symbol do you want exactly? Can you please provide a link to the exact symbol you're trying to find?
1,1,2,3,5,8,13,21,34,55,89,144,233,...

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haaj86
Posts: 21
Joined: Mon Apr 06, 2009 11:18 pm

Postby haaj86 » Sat Aug 21, 2010 4:13 pm

To be honest I usually use the big "I" to represent the indentity and most books uses this one. But I remember seeing this one:
identity.png
identity.png (850 Bytes) Viewed 60717 times

I drew this with paint because I can't find a webpage that uses it.

Thank you!


Edit by localghost: No external links (see Board Rules)! Attachments go onto the forum server (where applicable).

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josephwright
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Postby josephwright » Sat Aug 21, 2010 5:07 pm

Detexify says
  1. \documentclass{article}
  2. \usepackage{bbold}
  3. \begin{document}
  4. \( \mathbb{1} \)
  5. \end{document}
Joseph Wright

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haaj86
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Postby haaj86 » Sat Aug 21, 2010 5:29 pm

Thanks Joseph! This is precisely what I'm looking for.

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