In each of 3–14, the relation R is an equivalence relation
Chapter 8, Problem 13E(choose chapter or problem)
Problem 13E
In each of 3–14, the relation R is an equivalence relation on the set A. Find the distinct equivalence classes of R.
A is the set of all strings of length 4 in a’s and b’s. R is defined on A as follows: For all strings s and t in A,
s R t ⇔ s has the same first two characters as t.
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