Barrett's theorem

Barrett's theorem is a concept from the field of computational complexity, specifically regarding how certain problems can be related to others in terms of their difficulty. It states that if you can efficiently solve a particular problem, you can also solve related problems in a similarly efficient manner. This introduces the idea that some problems are inherently linked in complexity, suggesting that finding efficient solutions could have broad implications for various challenging issues in mathematics and computer science. Essentially, it provides insight into the interconnectedness of computational problems.