# Remove the author from the footer of all slides except in the titlepage

I want to remove the \author from all the slides except the start slide. I have used Warsaw theme. I don't know how to go about this. Please help me

Here is my code

\documentclass{beamer}
\setbeamercovered{transparent}
\usetheme{Warsaw}
\begin{document}
\author{Mark dain \\ \scriptsize{(Reg.No 12345)} }
\institute{Dept. of Information \& Communication Technology}
\date{October 21,2012}
\frame{\titlepage}

\begin{frame}
\begin{itemize}
\item Introduction
\item Algorithm for reducing finite automata
\item Reliability models
\item Reduction steps
\item References
\item Conclusion
\end{itemize}
\end{frame}
\end{document}


I dont want author to be displayed in the footer of the second frame.

-
Welcome to TeX.SX. Could you provide more information about the Beamer theme you are using? This will help people in answering you. –  Claudio Fiandrino Oct 21 '12 at 7:40
sory i edited my question. i have used Warsaw theme –  Nyfer Oct 21 '12 at 7:43
Seen, but there's still one problem remaining: in the titlepage of the Warsaw theme the author could also be displayed in the footline, besides in the center of the frame. So say i want to remove the \author from all the slides except the start slide it's a bit ambiguous because one could interpret that you still want, for the titlepage, the author in the footline. –  Claudio Fiandrino Oct 21 '12 at 8:02
Please, next time try to compose a minimal working examples. It is always preferable to post complete minimal working example rather than code snippets because this helps people to answer you. –  Claudio Fiandrino Oct 21 '12 at 8:40

Here is a possible solution:

\documentclass{beamer}
\usepackage{lmodern}
\setbeamercovered{transparent}
\usetheme{Warsaw}

\setbeamertemplate{footline}
{%
\leavevmode%
\end{beamercolorbox}%
\end{beamercolorbox}}%
\vskip0pt%
}

\author{Mark dain \\ \scriptsize{(Reg.No 12345)} }
\institute{Dept. of Information \& Communication Technology}
\date{October 21,2012}

\begin{document}

\frame{\titlepage}

\begin{frame}
\begin{itemize}
\item Introduction
\item Algorithm for reducing finite automata
\item Reliability models
\item Reduction steps
\item References
\item Conclusion
\end{itemize}
\end{frame}

\begin{frame}{Title}
text
\end{frame}
\end{document}


Basically the lines of code that do the work are:

\setbeamertemplate{footline}
{%
\leavevmode%
\end{beamercolorbox}%

that replicate basically the standard footline defined by the split theme, but now the author is displayed only if the frame number is the titlepage (done via the \ifnum checking the value of the current page).
Glad of having helped you. :) –  Claudio Fiandrino Oct 21 '12 at 9:25