byteCoderIn 1917, Soichi Kakeya asked: what is the smallest area needed to rotate a unit needle 180°? A cir
In 1917, Soichi Kakeya asked: what is the smallest area needed to rotate a unit needle 180°? A circle works—but smaller shapes exist. In 1919, Abram Besicovitch proved something unexpected: there is no minimum area. It can be made arbitrarily small, though never exactly https://t.co/hYciMfWxlO