Eric Germaneau schrieb:
you will find the file where my probleme is as attached file.
Braces mustn't spread over more than one formula line. So either you use - the \cases-environment, see chapter 3.5 of http://wiki.lyx.org/uploads/LyX/LyXMathebefehle/LyXMathebefehle.pdf - or the aligned-environment, see chapter 18.5 of http://wiki.lyx.org/uploads/LyX/LyXMathebefehle/LyXMathebefehle.pdf I attached a LyX-file showing both cases. regards Uwe
kurt-exo2.lyx
Description: application/lyx
