\usepackage{slashed}
\usepackage{txfonts}
\usepackage{amsfonts}
+\usepackage{mdwlist}
%\usepackage{accents}
\renewcommand{\ge}{\geqslant}
\section{Notation}
-$ C \hasparents \set X $ The parents of commit $C$ are exactly the set
+\begin{basedescript}{
+\desclabelwidth{5em}
+\desclabelstyle{\nextlinelabel}
+}
+\item[ $ C \hasparents \set X $ ]
+The parents of commit $C$ are exactly the set
$\set X$.
-$ C \ge D $ $C$ is a descendant of $D$ in the git commit
+\item[ $ C \ge D $ ]
+$C$ is a descendant of $D$ in the git commit
graph. This is a partial order, namely the transitive closure of
$ D \in \set X $ where $ C \hasparents \set X $.
-$ C \has D $ Informally, the tree at commit $C$ contains the change
+\item[ $ C \has D $ ]
+Informally, the tree at commit $C$ contains the change
made in commit $D$. Does not take account of deliberate reversions by
the user or in non-Topbloke-controlled branches; these are considered
normal, forward, commits. For merges and Topbloke-generated
conflict resolution. This is not a partial order because it is not
transitive.
+\end{basedescript}
+
\section{Invariants}
No replay: \[ C \has D \implies C \ge D \]