# Problem with Greek title

I'm having a problem writing a paper in Greek, using amsart.

I'm using the packages \usepackage[english,greek]{babel} and \usepackage[utf8x]{inputenc} and am able to write Greek & English throughout the paper without problem.

However when I write Greek at the title I get weird characters like:

My code is

\begin{document}

\title{τυχαιος τιτλος}


Any help with this would be appreciated!

EDIT: Sample code of the document:


\documentclass[12pt]{amsart}

\usepackage[english,greek]{babel}
\usepackage[utf8x]{inputenc}

\newtheorem{theorem}{Θεώρημα}[section]
\newtheorem{problem}{Πρόβλημα}[section]
\newtheorem{identity}{Ταυτότητα}[section]
\newtheorem{proposition}{Πρόταση}[section]
\newtheorem{conclusion}{Πόρισμα}[section]
\newtheorem{exercise}{Άσκηση}[section]

\theoremstyle{definition}
\newtheorem{definition}[theorem]{Ορισμός}
\newtheorem{example}{Παράδειγμα}[section]
\newtheorem{xca}[theorem]{Exercise}

\theoremstyle{remark}
\newtheorem{remark}[theorem]{Remark}

\numberwithin{equation}{section}

\newcommand{\abs}1{\lvert#1\rvert}

\newcommand{\blankbox}[2]{%
\parbox{\columnwidth}{\centering
\setlength{\fboxsep}{0pt}%
\fbox{\raisebox{0pt}[#2]{\hspace{#1}}}%
}%
}

\begin{document}

\title{Δοκιμαστικος τιτλος}

\author{Αρθρογραφος}

% \date{}

\begin{abstract}
Περιληψη
\end{abstract}

\maketitle

\section*{}

\begin{proposition}
Τυχαία Πρόταση
\end{proposition}

\begin{proof}
Η απόδειξη παραλείπεται.
\end{proof}

\begin{thebibliography}{10}

\bibitem {A} Ιστότοπος \selectlanguage{english} \textit{mathematica.gr}.

\end{thebibliography}

\end{document}


• Welcome to TeX.SX! Please help us to help you and add a minimal working example (MWE) that illustrates your problem. It will be much easier for us to reproduce your situation and find out what the issue is when we see compilable code, starting with \documentclass{...} and ending with \end{document}. – Sverre Nov 9 '14 at 15:54
• @Sverre thanks, but the paper I have prepared is 8 pages long full of Mathematics and the only problem I'm having is with the title in Greek, so I don't see why I should post the whole code. – Rrjrjtlokrthjji Nov 9 '14 at 15:57
• Correct, you shouldn't post all of your code, but a minimal example that illustrates your problem. – Sverre Nov 9 '14 at 15:59
• @Sverre edited. – Rrjrjtlokrthjji Nov 9 '14 at 16:08
• Thank you for posting a working example! At the same time, much of your code does not seem to be relevant to the question you're asking here. Please limit the example to code required for your issue to appear. You can have a look at the guide for how to minimalize your code. – Sverre Nov 9 '14 at 16:13

The problem is due to how amsart uppercases the title. You solve it by adding

\usepackage{textcase}


that will use the safer \MakeTextUppercase command.

\documentclass[a4paper]{amsart}
\usepackage[utf8]{inputenc}
\usepackage[english,greek]{babel}
\usepackage{textcase}

\begin{document}
\title{τυχαιος τιτλος}
\maketitle
\end{document}


It won't work with utf8x, though.

If you want to use utf8x, you need to prerender some characters, in this specific case

\documentclass[a4paper]{amsart}
\usepackage[utf8x]{inputenc}
\usepackage[english,greek]{babel}
\usepackage{textcase}

\PrerenderUnicode{τ}
\PrerenderUnicode{υ}
\PrerenderUnicode{χ}
\PrerenderUnicode{α}
\PrerenderUnicode{ι}
\PrerenderUnicode{ο}
\PrerenderUnicode{ς}
\PrerenderUnicode{λ}

\begin{document}
\title{τυχαιος τιτλος}
\maketitle
\end{document}

• Thanks for your answer! I replaced utf8x with utf8 since I saw it is a much safer option. I also didn't need to use the \MakeTextUppercase command, for a weird reason. – Rrjrjtlokrthjji Nov 9 '14 at 16:18
• @Nickolas With \usepackage{textcase} the \MakeTextUppercase command will be used implicitly, you don't need it in your document. – egreg Nov 9 '14 at 16:19
• Many Thanks for the clarification and for your answer! – Rrjrjtlokrthjji Nov 9 '14 at 16:20