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I have recently picked a file in asian laguage. When I have maked the necessary change in order to take a file in french laguage, I have this error:

! Package inputenc Error: Unicode char \u8: not set up for use with LaTeX.

Here is the code source 

\documentclass[12pt]{article} \usepackage[utf8]{inputenc}
\usepackage[TS1,T1]{fontenc}
\usepackage[a4paper,hmargin=2cm,vmargin=2cm]{geometry}
\usepackage{amsfonts,amsmath, amssymb,amsthm, graphicx}
\usepackage[francais]{babel} \usepackage{textcomp}
\usepackage{lmodern}

\newtheorem{definition}{\textbf{Definition}}

\begin{document}

\section{Chaos de Wiener}

\subsection{Décomposition en Chaos de Wiener}

On se donne: \begin{itemize}   \item Un espace de Hilbert séparable
$H$, muni du produit scalaire $\langle \cdot , \cdot \rangle_{ H}$,
qui induit une norme $\| \cdot \|_{ H}$   \item  Un espace de
probabilité complet $(\Omega, \mathcal{F}, \mathbb P)$. \end{itemize}


\begin{definition}[Processus Gaussien isonormal] \label{def:1} On dit
que le processus  $W = \{ W(h); h \in  H\}$  défini sur  $(\Omega,
\mathcal{F}, \mathbb P)$,  est un \textit{processus Gaussien
isonormal} sur  $H$ si $W = \{ W(h); h \in  H\}$ est   constitué par
une famille de v.a.r  gaussiènne centrée  vérifiant la relation: Pour
tout $h, g \in H$,  on a

$$E [ W(h) W(g) ] = \langle  h, g \rangle_H$$

\end{definition}

\end{document}

Well, I do not know if my questions are understandable and acceptable. Thank you in advance (and thank you to Gonzalo Medina and cfr and other for these answers).

Zbigniew
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1 Answers1

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I already had this problem, it turned out that I had iso-8859-1 characters in my text file.

I would advise you to check that your file is, indeed, in UTF-8 and, if not, to convert it to UTF-8 (eg. with convert or any similar software).

Also, trying a dyadic search through the text might help to localize the faulty character.

perror
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  • The problem persists nevertheless the proposed advises. Help! – Zbigniew Apr 24 '14 at 19:55
  • @Zbigniew are you sure your file is in utf8? If it is stored in iso-8859-1 and you don't want to change that, change \usepackage[utf8]{inputenc} to \usepackage[latin1]{inputenc} but changing the document to utf8 is better really – David Carlisle Apr 24 '14 at 21:04
  • I thank all for their helps. I have delete the word si in text and rewrite than the problem is solve. I don't know why. – Zbigniew Apr 25 '14 at 14:25
  • It was because 'si' contained a non UTF-8 character (some characters are just invisible). Next time you encounter this problem try to be sure that no iso-8859-1 character is in the file. And, by the way, once you have converted your file to UTF-8, you can rewrite the 'si' as you wish (as long as it does not include iso-8859-1 character). – perror Apr 25 '14 at 15:28