Need to consider $D \in \py$
-\subsubsection{For $L \haspatch P, D = C$:}
+\subsubsection{For $L \haspatch \p, D = C$:}
Ancestors of $C$:
$ D \le C $.
Contents of $C$:
$ D \isin C \equiv \ldots \lor \true \text{ so } D \haspatch C $.
-\subsubsection{For $L \haspatch P, D \neq C$:}
+\subsubsection{For $L \haspatch \p, D \neq C$:}
Ancestors: $ D \le C \equiv D \le L $.
Contents: $ D \isin C \equiv D \isin L \lor f $
so $ D \isin C \equiv D \isin L $.
So:
-\[ L \haspatch P \implies C \haspatch P \]
+\[ L \haspatch \p \implies C \haspatch \p \]
-\subsubsection{For $L \nothaspatch P$:}
+\subsubsection{For $L \nothaspatch \p$:}
Firstly, $C \not\in \py$ since if it were, $L \in \py$.
Thus $D \neq C$.
Now by contents of $L$, $D \notin L$, so $D \notin C$.
So:
-\[ L \nothaspatch P \implies C \nothaspatch P \]
+\[ L \nothaspatch \p \implies C \nothaspatch \p \]
$\qed$
\subsection{Foreign Inclusion:}