Twenty-five years too late to help Ross get his new couch into his apartment in "Friends," a mathematician has finally solved the pesky "sofa problem."
The math problem delineates the largest-size sofa that can fit around a corner of a given width — exactly the problem faced by the characters in an episode of "Friends" that aired in 1999. Ross' pleas of "Pivot!" could have been avoided, it turns out, if he'd only considered a Gerver's sofa with 18 curve sections and a maximum area of 2.2195 units. (Okay, so maybe it wouldn't have been that helpful.)
