What is the concept of reducibility in computational theory?

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What is the concept of reducibility in computational theory?

In computational theory, reducibility refers to the concept of transforming one problem into another problem in such a way that if the second problem can be solved efficiently, then the first problem can also be solved efficiently. This transformation is typically done by mapping instances of the first problem to instances of the second problem in a way that preserves the solution. Reducibility is used to analyze the complexity of problems by relating them to other known problems and determining their relative difficulty.