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Define formal language grammar?
A formal language grammar is a set of formation rules which describe that strings made by the alphabet of a formal language are syntactically valid, inside the language. A grammar just addresses the location as well as manipulation of the strings of the language. This does not explain anything else about a language, as its semantics.
As suggested by Noam Chomsky, a grammar G contains the following elements:
Here * is the Kleene star operator and signifies set union. It is, each production rule maps by one string of symbols to the other, here the first string consists of at least one non terminal symbol.
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For executing recursive function the data structure used is: For executing recursive function, stack is used as a data structure.
Ground substitution: Here the act of performing an instantiation is a function like there is only one possible outcome means we can write it as a function. And the notation Su
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