46-year-old puzzle of Möbius strip that seemed impossible finally solved by a mathematician good.is - get the latest breaking news, showbiz & celebrity photos, sport news & rumours, viral videos and top stories from good.is Daily Mail and Mail on Sunday newspapers.
One-sided Möbius strips are fun geometric shapes. A strip of paper has a front and back. Twist and glue the short edges. Suddenly, no front or back. You could draw a line across its surface without lifting the pencil. Mathematicians proposed the minimum strip size 46 years ago but couldn’t prove it. Someone finally has. …