TeX - LaTeX Stack Exchange is a question and answer site for users of TeX, LaTeX, ConTeXt, and related typesetting systems. Join them; it only takes a minute:

Sign up
Here's how it works:
  1. Anybody can ask a question
  2. Anybody can answer
  3. The best answers are voted up and rise to the top

I would like to list a few formulas which I have done as following:

\documentclass{article}
\usepackage{amsmath}
\begin{document}

\begin{enumerate}
\item \textbf{Hommes and in 't Veld AR(1) model:}
    \begin{align}
        x_t = \frac{1}{R^*}(n_{1,t} \phi_1 + n_{2,t}\phi_2)x_{t-1} + \epsilon_t.
    \end{align}
\item \textbf{Weak trend following AR(2) model:}
    \begin{align}
        x_t = \frac{1}{R^*}((n_{1,t} \phi_1 + 1.4n_{2,t})x_{t-1} - 0.4n_{2,t}x_{t-2}) + \epsilon_t.
    \end{align}
\item \textbf{Strong trend following AR(2) model:}
    \begin{align}
        x_t = \frac{1}{R^*}((n_{1,t} \phi_1 + 2.3n_{2,t})x_{t-1} - 1.3n_{2,t}x_{t-2}) + \epsilon_t.
    \end{align}
\item \textbf{General trend following AR(2) model:}
    \begin{align}
        x_t = \frac{1}{R^*}((n_{1,t} \phi_1 + (1+\phi_3)n_{2,t})x_{t-1} - \phi_3n_{2,t}x_{t-2}) + \epsilon_t.
    \end{align}
\end{enumerate}
\end{document}

The problem is that I would like to let these x_t begin at the same point. Does anyone know how to achieve this?

share|improve this question
up vote 8 down vote accepted

You can make use of amsmath's \intertext. By default this will not allow page breaks within the align environment, but if necessary it can be made possible.

\documentclass{article}
\usepackage{amsmath}

\begin{document}
\begin{enumerate}
\item \textbf{Hommes and in 't Veld AR(1) model:}
    \begin{align}
        x_t &= \frac{1}{R^*}(n_{1,t} \phi_1 + n_{2,t}\phi_2)x_{t-1} + \epsilon_t.\\
\intertext{\item \textbf{Weak trend following AR(2) model:}}
        x_t &= \frac{1}{R^*}((n_{1,t} \phi_1 + 1.4n_{2,t})x_{t-1} - 0.4n_{2,t}x_{t-2}) + \epsilon_t.\\
\intertext{\item \textbf{Strong trend following AR(2) model:}}
        x_t &= \frac{1}{R^*}((n_{1,t} \phi_1 + 2.3n_{2,t})x_{t-1} - 1.3n_{2,t}x_{t-2}) + \epsilon_t.\\
\intertext{\item \textbf{General trend following AR(2) model:}}
        x_t &= \frac{1}{R^*}((n_{1,t} \phi_1 + (1+\phi_3)n_{2,t})x_{t-1} - \phi_3n_{2,t}x_{t-2}) + \epsilon_t.
    \end{align}
\end{enumerate}
\end{document}

Output

share|improve this answer

In this specific example you can also use aligned where I have defined the \Indent macro to allow you to control the indentation:

enter image description here

Notes:

  • As hooy commented, With this method you do not get the equation numbers.

Code:

\documentclass{article}
\usepackage{amsmath}

\newcommand*{\Indent}{\par\hspace*{1.0cm}}

\begin{document}

\begin{enumerate}
\item \textbf{Hommes and in 't Veld AR(1) model:}
    \Indent$\begin{aligned}
        x_t = \frac{1}{R^*}(n_{1,t} \phi_1 + n_{2,t}\phi_2)x_{t-1} + \epsilon_t.
    \end{aligned}$
\item \textbf{Weak trend following AR(2) model:}
    \Indent$\begin{aligned}
        x_t = \frac{1}{R^*}((n_{1,t} \phi_1 + 1.4n_{2,t})x_{t-1} - 0.4n_{2,t}x_{t-2}) + \epsilon_t.
    \end{aligned}$
\item \textbf{Strong trend following AR(2) model:}
    \Indent$\begin{aligned}
        x_t = \frac{1}{R^*}((n_{1,t} \phi_1 + 2.3n_{2,t})x_{t-1} - 1.3n_{2,t}x_{t-2}) + \epsilon_t.
    \end{aligned}$
\item \textbf{General trend following AR(2) model:}
    \Indent$\begin{aligned}
        x_t = \frac{1}{R^*}((n_{1,t} \phi_1 + (1+\phi_3)n_{2,t})x_{t-1} - \phi_3n_{2,t}x_{t-2}) + \epsilon_t.
    \end{aligned}$
\end{enumerate}
\end{document}
share|improve this answer
    
One will lose the equation numbers, though, if they are necessary. – hooy Feb 16 at 11:14
1  
@hooyL Good point... Have made a note of that, – Peter Grill Feb 16 at 11:15

Your Answer

 
discard

By posting your answer, you agree to the privacy policy and terms of service.

Not the answer you're looking for? Browse other questions tagged or ask your own question.