# Math list - equation, operands specification

What I'd like to produce:

Y = A + B + C + D
where:
A........amount of whatever
B........foobar amounts whatever
C........foo
D........you name it


I am working with this equation:

$Y_i = \beta_0 + \beta_1 E_i + \beta_2 T_i + \sum_{j = 1}^{32} \beta_{j+2} M_{ij} + u_i$


Similar question (yet not the one): What would be the appropriate technique for typesetting a "where" list of variable specifications after an equation?

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Welcome to TeX.sx! Why isn't the linked question appropriate? I don't see how the leader dots can improve the appearance. – egreg Dec 26 '12 at 22:18
Hi there. See the answer by Torbjørn T.. Thanks :) – mreq Dec 26 '12 at 22:37

Here's a suggestion with a tabular. I specify the width of the first column, set the contents in math mode, and fill the remaining with dots. The array package is necessary.

\documentclass{article}
\usepackage{array}

\begin{document}
$Y_i = \beta_0 + \beta_1 E_i + \beta_2 T_i + \sum_{j = 1}^{32} \beta_{j+2} M_{ij} + u_i$
where

\noindent\begin{tabular}{>{$}p{3em}<{$\dotfill}@{}l}
\beta_0 & amount of this \\
\beta_1 & amount of that
\end{tabular}

\end{document}

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\noindent A\dotfill amount of whatever     \hspace{3cm} \\