Course Solutions Uncategorized (Solved) : 2 Let L Set Finite Strings B Let R Following Binary Relation L Num X Denotes Number Occurr Q26227410 . . . .

(Solved) : 2 Let L Set Finite Strings B Let R Following Binary Relation L Num X Denotes Number Occurr Q26227410 . . . .

 

2. Let L be the set of all finite strings over A-{a, b} and let R be the following binary relation on L (num(a, x) denotes the number of occurrences of a in the string r r Ry num(a, r) = num( a, y) ^ num(h, z ) = num(b, y). Observe that R is an equivalence relation on L (a) What is the number of strings in the equivalence class which contains ababa? Explain (b) What is the number of equivalence classes of R which contain strings of length k? Explain (c) Are there any equivalence classes which contain just one string? If the answer is YES, why. why. give the number of such classes and provide some examples; if it is NO, explain why all equivalence classes contain more than one string.

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