A 31-year-old Korean mathematician solved one of the oldest math puzzles and was recognized as one of Scientific American’s top math breakthroughs of 2025. The “Optimality of Gerver's Sofa” study by ...

The movement of a moving sofa in the perspective of hallway (top) and sofa (bottom). Credit: arXiv (2024). DOI: 10.48550/arxiv.2411.19826 A mathematician at Yonsei University, in Korea, claims to have ...

Mathematicians aren't usually the first point of call on moving day. And really, why should they be? For nearly 60 years, they couldn't even tell you whether your fancy new three-seat sofa would make ...

In a scene from the classic sitcom, "Friends," the characters Ross, Rachel and Chandler struggle to heft a new couch up the stairs of their apartment building. As they try to get the sofa around the ...