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 ...

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 ...

What is the largest sofa that you can squeeze around the corner of a hallway? A horseshoe-shaped piece of furniture known as Gerver’s sofa has officially taken the crown, solving a mathematical ...

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 ...

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 ...

For nearly 60 years, the “moving sofa problem,” a long-standing mathematical puzzle, remained unsolved. Last year, a Korean researcher’s breakthrough on this problem was selected as one of the top 10 ...