deletions | additions       diff --git a/stuff.tex b/stuff.tex  index b7952c0..fa05505 100644  --- a/stuff.tex  +++ b/stuff.tex 
...
\item $\displaystyle\sum_{i=1}^n \frac{1}{i} = H_n$, where $H_n$ is the nth harmonic number.  \end{enumerate}  \subsection{Solving the sum}  \begin{equation}  \begin{split}  m &= \sqrt{n}\\