L \in \pqn
}\]
\[ \eqn{ Currently Excluded }{
- L \nothaspatch \pry
+ L \nothaspatch \pr
}\]
\[ \eqn{ Inserted's Ends }{
E \in \pendsof{L}{\pry} \implies E \le R^+
}\]
\[ \eqn{ Others' Ends }{
- \bigforall_{\p \neq \pr, L \haspatch \p}
+ \bigforall_{\p \patchisin \L}
E \in \pendsof{R^+}{\py} \implies E \le L
}\]
\[ \eqn{ Insertion Acyclic }{
\subsubsection{For $\p \neq \pr$:}
-xxx up to here
-
-By Insertion Acyclic, $D \not\isin R^+$. xxx this is wrong
-By Tip Contents for $R^+$,
-$D \isin R^+ \equiv D \isin R^- \lor (D \in \pry \land ...)$
-but $D \in \py$ so $D \not\in \pry$. So $D \not\isin R^-$.
-By $\merge$, $D \isin C \equiv D \isin L$.
+By Exclusive Tip Contents for $R^+$ ($D \not\in \pry$ case)
+$D \isin R^+ \equiv D \isin R^-$.
+So by $\merge$, $D \isin C \equiv D \isin L$.
If $L \nothaspatch \p$, $D \not\isin L$ so $C \nothaspatch \p$. OK.
If $L \haspatch \p$, Others' Ends applies; by Transitive
Ancestors, $A \in \pancsof{R^+}{\py} \implies A \le L$.
-So $D \le R^+$, which is the same as $D \in \pancsof{R^+}{\py}$,
-$\implies D \le L$. Thus $D le C \equiv D \le L$.
+So $D \le R^+ \implies D \le L$,
+since $D \le R^+ \equiv D \in \pancsof{R^+}{\py}$.
+Thus $D \le C \equiv D \le L$.
And by $\haspatch$, $D \le L \equiv D \isin L$ so
$D \isin C \equiv D \le C$. Thus $C \haspatch \p$.
OK.