Going ‘beyond GDP’ should not mean sidelining the SDGs

· · 来源:tutorial资讯

The ProblemHow densely can identical spheres be packed in n-dimensional space? In one dimension, the problem is trivial, and in two dimensions, elementary proofs have existed for decades. In three dimensions, a solution was conjectured by Kepler in 1611, but it was not proved until Thomas Hales settled it in 1998, in a heavily computer-assisted proof that subsequently took over a decade to formally verify.

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2026-02-28 00:00:00:03014271510http://paper.people.com.cn/rmrb/pc/content/202602/28/content_30142715.htmlhttp://paper.people.com.cn/rmrb/pad/content/202602/28/content_30142715.html11921 以实际行动阻击日本“再军事化”狂飙(钟声)

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Sales of the glasses tripled in 2025, CNBC reported, with more than 7 million units sold.