[Tex/LaTex] Summation indices

math-modespacing

I'm trying to put 2 equations in 1 and get the summation indices in the right place. My code is:

\begin{equation}
  \left
    \begin{array}{c}
      \sum_{s \in S} \sum_{e \in E} \sum_{p \in P}
      X_{i}_{e}_{p}_{d}_{s} \ge 1 \\ \\
      \sum_{s \in S} \sum_{e \in E} \sum_{p \in P}
      X_{i}_{e}_{p}_{d+1}_{s} \ge 1
    \end{array}
  \right \} \Rightarrow W_{i}_{d} = 1
\end{equation}

How can I fix this?

Best Answer

Based on guessing:

enter image description here

\documentclass{article}
\usepackage{amsmath}

\begin{document}

\begin{equation}
    \begin{Bmatrix}
\sum\limits_{s\in S} \sum\limits_{e\in E} \sum\limits_{p\in P}
      & X(i,e,p,d,s)      \ge 1       \\[2.5ex]
\sum\limits_{s\in S} \sum\limits_{e\in E} \sum\limits_{p\in P}
      & X(i,e,p,d+1,s)    \ge 1
    \end{Bmatrix}
\Rightarrow W_{i,d} = 1
\end{equation}


\begin{equation}
    \begin{Bmatrix}
\sum\limits_{s\in S} \sum\limits_{e\in E} \sum\limits_{p\in P}
      & X_{i,e,p,d,s}      \ge 1       \\[2.5ex]
\sum\limits_{s\in S} \sum\limits_{e\in E} \sum\limits_{p\in P}
      & X_{i,e,p,d+1,s}    \ge 1
    \end{Bmatrix}
\Rightarrow W_{i,d} = 1
\end{equation}

\end{document}