Why the World’s Best Mathematicians Are Hoarding Chalk

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在数学界有这样一个传说——数学家只要用这样的粉笔,写出来的定理肯定不会出错。而这种备受推崇的粉笔,就是日本生产的羽衣粉笔。粉笔易断是很多老师不喜欢它的主要原因,但羽衣粉笔由于独特的制作工艺使得这种粉笔异常坚韧,而且这种粉笔写出来的线条很致密,留下的线条很美观,很容易擦干净。也正因如此,当全世界的数学家听说这种粉笔停产后,疯狂的囤积这种粉笔。

- The legend around this chalk is that it's impossible to write a false theorem.

- I assume the special ingredient was angel tears.

- Mathematicians from all of the top schools very frequently use it.

- It's a cult favorite.

- As soon as I use it I was a convert.

- The chalk is one of the best kept secrets in the math world.

- It's the Rolls Royce of chalk.

- Hagoromo is a brand of Japanese chalk.

The way it flows on a board is a bit hard to describe in words.

- It's really hard to get.

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