# adding acknowledgement in .tex file [duplicate]

I want to thank my professor with mention in my LaTeX document, so I need to add a section (without section number) "acknowledgement" before the introduction in my .`tex` file . How can I write there?

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## marked as duplicate by yo', egreg, hpesoj626, lockstep, ThorstenJan 12 '13 at 16:43

To add a non numbered section you just use

``````\section*{Acknowledgement}
``````

``````\addcontentsline{toc}{section}{Acknowledgement}