# Author affiliation like in SDM

I am using this template for SDM paper http://www.siam.org/proceedings/macros/soda2e.all.

I have multiple authors with some authors from the same institutions. How can I show this information in the authors section. The sample file shows different authors from different institution

\author{Corey Gray\thanks{Society for Industrial and Applied Mathematics.} \\
\and
Tricia Manning\thanks{Society for Industrial and Applied Mathematics.}}


I want Corey Grat and Tricial Manning to have same sign * and Society for Industrial and Applied Mathematics to be shown only once

• Well, you should include the right institution in each case with the macr \thanks{} as in the example. Please add the MWE for see what are you doing. – Aradnix Sep 27 '14 at 2:51
• @Aradnix. I have added some sample. It is now what I wanted – user12331 Sep 27 '14 at 3:00
• Please read the lik above, in this site we ask for full minimal working examples for can run them on our PCs or Macs and can detect easily the error. So, please ad a MWE and not only a snippet. BTW that example creates you an error or what's the problem? – Aradnix Sep 27 '14 at 3:05
• @Aradnix. Look at this one cs.utexas.edu/users/ml/papers/acharya.sdm14.pdf. I want to have the author index like this one – user12331 Sep 27 '14 at 3:23

Well, to answer your question I will use the code example of the class you mention in your question:

\documentclass[twoside,leqno,twocolumn]{article}
\usepackage{ltexpprt}

\begin{document}

%\setcounter{chapter}{2} % If you are doing your chapter as chapter one,
%\setcounter{section}{3} % comment these two lines out.

\title{\Large SIAM/ACM Preprint Series Macros for
Use With LaTeX\thanks{Supported by GSF grants ABC123, DEF456, and GHI789.}}
\author{Corey Gray\thanks{Society for Industrial and Applied Mathematics.} \\
\and
Tricia Manning\footnotemark[2]} %{Society for Industrial and Applied Mathematics.}}
\date{}

\maketitle

%\pagenumbering{arabic}
%\setcounter{page}{1}%Leave this line commented out.

\begin{abstract} \small\baselineskip=9pt This is the text of my abstract. It is a brief
description of my
paper, outlining the purposes and goals I am trying to address.\end{abstract}

\section{Problem Specification.}In this paper, we consider the solution of the $N \times N$ linear
system
$$\label{e1.1} A x = b$$
where $A$ is large, sparse, symmetric, and positive definite.  We consider
the direct solution of (\ref{e1.1}) by means of general sparse Gaussian
elimination.  In such a procedure, we find a permutation matrix $P$, and
compute the decomposition
$P A P^{t} = L D L^{t}$
where $L$ is unit lower triangular and $D$ is diagonal.
.
.
.
etc.
\end{document}


In fact, the trick is very easy, we only need to use the \footnotemark[<number>]command. This introduces the reference <number> in a footnote but without compose the footnote.

In other words, according to the lines of the snippet of your question, for you can use the same symbol to name several authors from the same institution use:

\author{Corey Gray\thanks{Society for Industrial and Applied Mathematics.} \\
\and
Tricia Manning\footnotemark[2]}


Instead of repeat the command \thanks with its content, you'll use \footnotemark[]. The reason of the number 2 is because if you choose 1, that footnote will have the same symbol than the first \thanks in the title.

As you can see, the trick is to know the number (order of appearance) of the note (and its symbol) you want to repeat to display as you want them.