Question: DEFINITION 5 . 2 0 Language A is mapping reducible to language B , written A Sm B , if there is a computable function

DEFINITION 5.20
Language A is mapping reducible to language B, written A Sm B,
if there is a computable function f: &*->&*, where for every w,
wE A -> f(w) B.
The function f is called the reduction from A to B.

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