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9. Let L ≤ ML’ denote the language L is mapping reducible (many to one reducible) to language L’. Which one of the following is True?
(a) If L ≤ pL’ and L’ is semidecidable then L is semidecidable.
(b) If L ≤ pL’ and L is RE then L’ is RE.
(c) If L ≤ pL’ and L is decidable then L’ decidable.
(d) If L ≤ pL’ and L is recursive.
Solution: Option (a)
PLEASE Explain
closed as a duplicate of: GATE2014-2-16
asked in Theory of Computation by (199 points)
closed by | 11 views
+1 u can find the same question here. moreover for better understanding in more simpler way you can take it as:


L(FALSE)--------> L'(FALSE)

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