Decision problem
(in Computer science) “주어진 입력이 소수인가?”, “주어진 입력이 특정 패턴을 만족하는가?” 등 답이 “네” 또는 “아니오” 중 하나인 문제.
결정 가능성
- Decidable, if the set of inputs for which the answer is yes is a recursive set.
- Partially decidable, if the set of inputs for which the answer is yes is recursively enumerable set.
- Undecidable, if not decidable.