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Revision as of 15:52, 9 January 2009
, 15:52, 9 January 2009→The Cactus Language : Stylistics: markup
In the context-free style of formal grammar, the ''additive'' aspect is easy enough to spot. It is signaled by the parallel covering of many augmented strings or sentential forms by the same non-terminal symbol. Expressed in active terms, this calls for the independent rewriting of that non-terminal symbol by a number of different successors, as in the following scheme:
In the context-free style of formal grammar, the ''additive'' aspect is easy enough to spot. It is signaled by the parallel covering of many augmented strings or sentential forms by the same non-terminal symbol. Expressed in active terms, this calls for the independent rewriting of that non-terminal symbol by a number of different successors, as in the following scheme:
{| align="center" cellpadding="8" width="90%"
| q :> W_1.
|
|
<math>\begin{matrix}
q & :> & W_1 \\
\\
\cdots & \cdots & \cdots \\
\\
q & :> & W_k \\
\end{matrix}</math>
|}
<pre>
It is useful to examine the relationship between the grammatical covering
It is useful to examine the relationship between the grammatical covering
or production relation ":>" and the logical relation of implication "=>",
or production relation ":>" and the logical relation of implication "=>",
