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- 如何看待王虹和 Joshua Zahl 在 arXiv 发布对三维挂谷（Kakeya）猜想的证明？ - 知乎
这次突破的论文证明了什么？ 2025年2月26日，北大校友王虹和Zahl合作，提交了预印本论文Volume estimates for unions of convex sets, and the Kakeya set conjecture in three dimensions，宣告证明了三维的挂谷猜想。
- “浮世三千，吾爱有三。日，月与卿。日为朝，月为暮，卿为朝朝暮暮”这句话的意思什么？ - 知乎
I love three things in this world Sun,Moon and You sun for morning Moon for night and you forever 浮世三千，吾爱有三。 日，月与卿。 日为朝，月为暮， 卿为朝朝暮暮。 出自意大利诗人William Michael Rossetti 的 LIFE OF JOHN KEATS,写于1887年，全诗共四段，这是第二段。
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Why do we have both the word "three" and the numeral "3" in this sentence? The number 345 has three digits, where the first digit is a 3
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What would be the correct word to use when referring to three or more items, in the same manner as the word both? For example, using two words, with the word both: "There are several recommendat
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3 Why is it 'three score years and ten' almost half the time and not always 'three score and ten years'? Note: I edited the question body and title in light of comments and answers pointing me to a Google phrase frequency chart which indicates that the two versions are used about equally often right now
- Why there are two different meanings for triweekly?
1 Why there are two different meanings for “triweekly”? It's almost as though the language evolved rather than being properly designed Is there another word to indicate a period of exactly 3 weeks? Yes, "three-weekly" And for the other meaning (three times a week): "thrice-weekly"
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