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I have the following

\begin{equation}
    \begin{split}
        \frac{1}{2}\sum_{i} z_i^2 + \sum_{i}s_it_i &=   \frac{1}{2}\sum_{i}z_i^2 + \sum_{P_2}s_it_i+\sum_{R \setminus P_2}s_it_i\\
                             &=     \frac{1}{2}\sum_i z_i^2 + \sum_{P_2}2(n-3-z_i) + \sum_{R \setminus P_2} (n-2-z_i)\\
                             &\ge    \frac{1}{2}\sum_i z_i^2 - \sum_{R} z_i - \sum_{P_2}z_i+ 2(n-3)\sigma + (n-p-q-2)(n-2)\\
\end{split}

\end{equation}

Compiling gives me the error "Paragraph ended before split was complete", it mentions something about \par afterward. I can't spot any error.

0 Answers0