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  3. 14.6. say that a string x overlaps a string y if t

14.6. Say that a string x overlaps a string y if there exist strings p, q,...

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Advance Math

14.6. Say that a string x overlaps a string y if thereexist strings p, q, r such that x = pq and y = qr, with q ?= ?. Forexample, abcde overlaps cdefg, but does not overlap bcd orcdab.

(a) Draw the overlap relation for the four strings oflength 2 over the alphabet {a, b}.

(b) Is overlap reflexive? Why or why not?

(c) Is overlap symmetric? Why or why not?

(d) Is overlap transitive? Why or why not?

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