S4E40. 两个结连在一起后可能更容易解开—— 数学家推翻了一个90年历史猜想 episode artwork

EPISODE · Aug 10, 2025 · 17 MIN

S4E40. 两个结连在一起后可能更容易解开—— 数学家推翻了一个90年历史猜想

from 大老李聊数学(全集)

三叶结,解结数是1,即翻转1个交叉点的绳子上下关系,可把纽结转换为平凡结:本次反例中的7个交叉点的环面纽结:15个交叉点,解结数为2的纽结:14个交叉点,解结数(最多)为5 的纽结:微信公众号:搜“大老李聊数学”知乎:搜level 10的“大老李”

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S4E40. 两个结连在一起后可能更容易解开—— 数学家推翻了一个90年历史猜想

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