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I have this piece in the document:


now I get an error because of the "Plus" in the footnote. Obviously Latex thinks, this is an math command. How can I solve this type of error?

thx for help

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\footnote{HG-U133\_Plus\_2.na32.annot.csv} – Herbert Aug 17 '12 at 9:50
thx, thats it :) – Jürgen Stürmer Aug 17 '12 at 10:30
up vote 5 down vote accepted

It should be the underscore that leads to error.

You can use \_ instead of _.


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You can also use \urldef from the url package.


Then in the footnote:

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