2

I want to reproduce the following:

enter image description here

The inner min-Problem I make with a \begin{equation}\begin{aligned} inner min-Problem \end{aligned}\end{equation}

But I can't find a way to make brackets around it nor to write the max left to those brackets.

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2 Answers 2

4

I propose to do it with a simple pmatrix* environment:

\documentclass{article}
\usepackage{mathtools}
\usepackage{booktabs} 
\DeclareMathOperator{\conv}{conv}

\begin{document}
\[
\max_{\lambda\ge0}\begin{pmatrix*}[l]\displaystyle
    \min_{c,x} \sum_t\sum_i c_{it} - \sum_t \lambda_t\Bigl(\sum_i A_{it}x_{it} - b_t\Bigr)\\\addlinespace%[2.5ex]
   \: \mathrm{s.t.}\enspace (c_i,x_i) \in \conv\bigl( V_{j\in J_i} X_i^j\bigr)
  \end{pmatrix*}
\]

\end{document} 

enter image description here

2
  • Now, the only thing that is missing, is the enumeration of the equation. Is there a way to do that?
    – R.Deilke
    May 15 at 11:16
  • 1
    @R.Deilke: the [ ... \] construct is for unnumbered equations. For a (single) numered equation}, just replace it with \begin{equation} ... \end{equation}.
    – Bernard
    May 15 at 13:27
4

Welcome to TeX:SE!

Try the following:

\documentclass{article}
\usepackage{amsmath}
\DeclareMathOperator{\conv}{conv}

\begin{document}
\begin{equation}
\max_{\lambda\ge0}\left(
    \begin{aligned}
    \min_{c,x}    &\quad &&   \sum_t\sum_i c_{it} - \sum_t \lambda_t\biggl(\sum_i A_{it}x_{it} - b_t\biggr)\\[1ex]
    \mathrm{s.t.} &      &&   (c_i,x_i) \in \conv\Bigl( V_{j\in J_i} X_i^j\Bigr)
    \end{aligned}\right)
\end{equation}
\end{document}

enter image description here

2
  • Now, the only thing that is missing, is the enumeration of the equation. Is there a way to do that?
    – R.Deilke
    May 15 at 11:16
  • 1
    @R.Deilke, this is simple. Replace \[ and \] with \begin{equation} and \end{equation} respectively. See edited answer.
    – Zarko
    May 15 at 13:15

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