wip merge complex - a bug

diff --git a/article.tex b/article.tex
index be767aa82859183fa1baebc9f5eb060a5ac66d07..b2f943b04c0b051059c70ab61d44a8cb8535d276 100644 (file)
--- a/article.tex
+++ b/article.tex
@@ -598,4 +598,23 @@ $D \in \pancsof{X}{\py}$, so by Merge Ends and
 Transitive Ancestors $D \le Y$ --- a contradiction, so $D \not\le X$.
 Thus $D \not\le C$.  By $\merge$, $D \not\isin C$.  OK.
 
+Consider $D \neq C, M \haspatch P, D \isin Y$:
+$D \le Y$ so $D \le M$
+
+%anyway     D \not\isin X
+%           D \isin Y
+%           D \le Y
+
+%bad case
+%           D \not\le M
+%           D \not\isin M
+% results
+%           D \isin C    wrong
+
+%ok case
+%           D \le M
+%           D \isin M
+% results
+%           D \not\isin C  OK
+
 \end{document}