A mathematician at Yonsei University, in Korea, claims to have solved the moving sofa problem. Jineon Baek has posted a 100+-page proof of the problem on the arXiv preprint server. Most people who ...

Add Yahoo as a preferred source to see more of our stories on Google. A graphical representation of what a real Gerver’s sofa might look like. If you’ve ever struggled to squeeze a couch around a ...

When you’re hauling a couch through a narrow hallway and yelling “Pivot!” like Ross from Friends, you’re unwittingly grappling with a half-century-old mathematical conundrum. Known as the Moving Sofa ...

A Korean mathematician has solved one of geometry’s most stubborn puzzles, ending a problem that has challenged researchers for nearly 60 years and earning global recognition for a proof achieved ...

Most of us have struggled with the mathematical puzzle known as the "moving sofa problem." It poses a deceptively simple question: What is the largest sofa that can pivot around an L-shaped hallway ...

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 ...

Katie has a PhD in maths, specializing in the intersection of dynamical systems and number theory. She reports on topics from maths and history to society and animals. Katie has a PhD in maths, ...

Add Yahoo as a preferred source to see more of our stories on Google. The “moving sofa problem,” a puzzle that has remained unresolved since it was introduced in 1966 and memorably illustrated in the ...