作者：慎葱群 发布时间：2019-03-07 04:10:09

By Ian Stewart WE’VE all seen them, yet since the early 19th century no one could explain why they are the way they are. Now, at last, four mathematicians have proved that double soap bubbles could not be any other shape. The mathematics of bubbles got going in the 1830s, when the physicist Joseph Plateau began dipping wire frames into soap solution. He was astounded by the results, and despite years of research, many of his observations still lack rigorous explanations. An especially notorious case, known as the “double bubble conjecture”,

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