traversal: Base/Tip Correct Contents chane notation

[topbloke-formulae.git] / trav-proofs.tex

diff --git a/trav-proofs.tex b/trav-proofs.tex
index 01d289a69e6ba5e2b9bec655a09669c9549629ce..f1993d31191fa6ec9798dc9a00bca0903540cc98 100644 (file)
--- a/trav-proofs.tex
+++ b/trav-proofs.tex
@@ -5,6 +5,21 @@ that the commit generation preconditions are met.
 
 WIP WHAT ABOUT PROVING ALL THE TRAVERSAL RESULTS
 
+\subsection{Traversal Lemmas}
+
+Firstly, some lemmas.
+\statement{Tip Correct Contents}{
+  \tipcy \haspatch \pa E
+    \equiv
+  \pa E = \pc \lor \pa E \isdep \pc
+}
+\proof{
+  For $\pc = \pa E$, Tip Own Contents suffices.
+  For $\pc \neq \pa E$, Exclusive Tip Contents
+  gives $D \isin \tipcy \equiv D \isin \baseof{\tipcy}$
+  which by Correct Base $\equiv D \isin \tipcn$.
+}
+
 \subsection{Base Dependency Merge, Base Sibling Merge}
 
 We do not prove that the preconditions are met.  Instead, we check
@@ -17,7 +32,9 @@ WIP WHAT ABOUT PROVING ALL THE TRAVERSAL RESULTS
 
 \subsection{Recreate Base Beginning}
 
-WHAT IF $\pendsof{L}{\pqy} \neq \{\}$ ?
+\subsubsection{Create Acyclic}
+
+$L = \tipdy$ so
 
 \subsection{Tip Base Merge}