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==Generalities About Formal Grammars==
 
==Generalities About Formal Grammars==
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It is fitting to wrap up the foregoing developments by summarizing the notion of a formal grammar that appeared to evolve in the present case.  For the sake of future reference and the chance of a wider application, it is also useful to try to extract the scheme of a formalization that potentially holds for any formal language.  The following presentation of the notion of a formal grammar is adapted, with minor modifications, from the treatment in (DDQ, 60–61).
    
<pre>
 
<pre>
It is fitting to wrap up the foregoing developments by summarizing the
  −
notion of a formal grammar that appeared to evolve in the present case.
  −
For the sake of future reference and the chance of a wider application,
  −
it is also useful to try to extract the scheme of a formalization that
  −
potentially holds for any formal language.  The following presentation
  −
of the notion of a formal grammar is adapted, with minor modifications,
  −
from the treatment in (DDQ, 60-61).
  −
   
A "formal grammar" !G! is given by a four-tuple !G! = ("S", !Q!, !A!, !K!)
 
A "formal grammar" !G! is given by a four-tuple !G! = ("S", !Q!, !A!, !K!)
 
that takes the following form of description:
 
that takes the following form of description:
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