Question

The symbol used to represent the stack symbol _​

Answer 1

Answer:

Its initial stack symbol is the grammar's start symbol. For a context-free grammar in Greibach normal form, defining (1,γ) ∈ δ(1,a,A) for each grammar rule A → aγ also yields an equivalent nondeterministic pushdown automation.

Explanation:

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Answer 2

Answer:

z0 is the symbol

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