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In my bibliography I have a reference to an author with a Danish name: Nørregaard. The problem is that to do the slashed o I need to type \o. However, I can't do this N\orregaard and if I do this N\o rregaard then I get a space in the name. How do I solve this problem?

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You don't get a space if you type N\o rregard. – egreg Dec 10 '11 at 17:46
With the right input encoding you should be able to insert »ø« directly. – Thorsten Donig Dec 10 '11 at 18:13
up vote 26 down vote accepted

When typing the name in the text, N\o rregard will not leave any space in the output, as spaces after control sequences (with name consisting of letters) are ignored.

However, in .bib file the question is slightly different, as you want to use the name also for collation. The BibTeX manual recommends

author = {N{\o}rregard, X.}

because in this way the entire combination {\o} would be regarded simply as an "o". The typeset text will not have font dependent kerning between "N" and "ø" and between "ø" and "r". If you're using biblatex, then Nørregard is fine (as long as you use an input encoding where ø is present).

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What are required packages to get $\o$ in the main document? It would be nice to get a complete answer. – Masi Oct 15 '15 at 18:01
@Masi Why should you want ø in math mode? And for getting ø (with \o) in text mode no package is needed. – egreg Oct 15 '15 at 18:04
You are right! $\emptyset$ better. I thought you could do that wdth \o but not apparently. – Masi Oct 15 '15 at 18:07

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