Find and prove the connection between the notions of LR(0)-coherence and LR(1)-coherence.

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Assume that a grammar is fixed. The string S of terminals and

nonterminals is LR(0)-coherent with situation K → U_V if and only if it is LR(1)- coherent with the pair [K → U_V, t] for some terminal t (or for t = EOI). In other words, Left(K) is the union of the sets Left(K, g) for all t. (In the latter form, the statement is almost obvious.)

Question: 14.2.4

Assume that an arbitrary input string is given. We...

Question: 14.4.6

As before, at each stage of the LR-process we can ...

Question: 14.4.5

Assume that a grammar is fixed. Let S be an arbitr...

Question: 14.4.4

(1) If a string S is coherent with a situation [K ...

Question: 14.4.3

The string S (of terminals and nonterminals) is co...

Question: 14.4.2

Now a situation is defined as a pair
[situation in...

Question: 14.3.3

Yes; both conflicts that prevent it from being a L...

Question: 14.4.1

Nonterminals are symbols (LeftK t) for any nonterm...

Question: 14.2.3

Yes, see the corresponding tables (a) and (b) (no ...

Question: 14.3.2

We repeat the argument used for LR(0)-grammars. Th...