\end{cases}
}\]
-\subsection{Tip Self Contents}
+\subsection{Tip Own Contents}
Given Base Acyclic for $C$,
$$
- \bigforall_{C \in \py} C \haspatch \p \land \neg[ C \nothaspatch \p ]
+ \bigforall_{C \in \py} C \haspatch \p
$$
Ie, tip commits contain their own patch.
Apply Exclusive Tip Contents to some $D \in \py$:
$ \bigforall_{C \in \py}\bigforall_{D \in \py}
D \isin C \equiv D \le C $.
-Thus $C \haspatch \p$.
-And, since $C \le C$, $C \isin C$. Therefore $\neg[ C \nothaspatch \p ]$
+Thus $C \zhaspatch \p$.
+And we can set $F=C$ giving $F \in \py \land F \le C$, so $C \haspatch \p$.
}
\subsection{Exact Ancestors}