deletions | additions       diff --git a/physical model1.tex b/physical model1.tex  index b97a5b6..dd361f4 100644  --- a/physical model1.tex  +++ b/physical model1.tex 
...
\subsection{Physics of sheep}  Here, we get our inspiration from Boids \cite{boids}, and define the following axioms for movement of sheep. sheep:  \begin{enumerate}  \item [Axiom 1] Sheep move away from dogs when sufficiently close.  \item [Axion 2] When two sheep are very close to each other, they want more space and move away.  \item [Axiom 3] When two sheep are neither too close, nor too far, they flock together.  \end{enumerate}