smoes
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help understanding formal grammar for subtraction example
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All in " " included strings are called symbols. What you now to is to e.g. match a given input using your grammar. Is 1-0 defined in your language? Lets have a look: You start with the rule E ...

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Correct term for “string consisting of words”
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Lets assume you are defining sets using your definition. It is obvious that the set defined by (2) is a subset of the set you are defining by (1) right now. But that is offtopic. I am quite sure that ...

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