这是一个示例模式:
\begin{schema}{InitJunction1}
\Delta Sys\\
junc?: JUNCTION\\
road1?: ROAD\\
road2?: ROAD
\where
road1? \neq road2?\\
junc? \notin juncList\\
\forall j: juncList @ \neg ((road1? \in roadsInJunc(j)) \land (road2? \in roadsInJunc(j))\\
roadsInJunc' = roadsInJunc \cup \{junc? \mapsto \{road1,road2\}\}\\
juncList' = juncList \cup \{junc?\}
\end{schema}
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请参阅我的问题和答案: LyX中的Zed Notation