Just to add some information: the problem is coming because I selected the class of document: "Book AMS" and LaTex was not, apparently, able to interprate the headings as text : "N° 1 b, (p.6)."
"Book AMS" was selected because chapter and section format are centered and not on the left side like in Book. I read most of the doc. but I did not find the way to modify the settings of chapter and others. Is it possible ? Thanks in advance Paul "Paul Schwartz" <[EMAIL PROTECTED]> a écrit dans le message de news: [EMAIL PROTECTED] > LyX 1.4.1 > I am probably making a mistake which I don't understand: > > In a document I input the following: > part* > section* > tex\setcounter{footnote}{0} > T X T with some footnotes and index inputs > New page > section* with the following title N°1 b, (p.6). > > Then when I try to display with PDF_(pdflatex), I got the following error > window > ------ > upper part: > Package inputenc Error: keyboard character is undefined > > lower part: > You need to provide a definition with \DeclareInputText or > \DeclareInputMath before using this key > > ----- > > If I remove the section* after New page then there is no problem > > Any Clue! > > Thanks > > Paul > > > >