• ## Discussion Feed

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1.
http://mathoverflow.net/questions/115462/on-the-derived-category-of-constructible-etale-sheaves

I've had this issue in the past - I format LaTeX correctly, yet it doesn't work.
2.

This one is a little obscure. Sometimes underscores get interpreted as starting italics before getting sent to mathjax. The backticks hack works for issues of this kind.

• CommentAuthorEmil J
• CommentTimeDec 5th 2012

Or writing the underscore with a backslash.
• CommentAuthordavidac897
• CommentTimeDec 31st 2012

• CommentAuthordavidac897
• CommentTimeDec 31st 2012

When I type $\mathrm{GL}_n(\mathbb{Q}_{\ell})$, it doesn't work. In particular, $\mathbb{Q}_{\ell}$ doesn't work but $\mathbb Q_{\ell}$ does, and $\mathrm{GL}_n$ doesn't work at all.
3.

Did you try using backticks ` before and after dollar signs?