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Pythagorean Theorem proof in a 2100 year old Chinese book

fermatslibrary.com

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Re: Pythagorean Theorem proof in a 2100 year old Chinese book

#5
post #3

Wouldn't something from that period be written with seal script? That script looks like modern Han characters with an archaic font - it's completely readable.

Someone commented on the site that it's a 17th century reproduction.

Also while those are Han, the language is sophisticated to regular Chinese readers. I can't even make sense of the words (individually yes) as a native Chinese speaker.

A far as paper writing, I found [1] which said roughly 100 A.D. some paper production began.

[1]: http://www.chinaheritagequarterly.org/tien-hsia.php?searchte...

Re: Pythagorean Theorem proof in a 2100 year old Chinese book

#6

Any ideas of it's authentic? China is hyper nationalist so I'm initially skeptical. Might be as fictitous as their GDP figures or sovereignty over Taiwan.

> sovereignty over Taiwan

This is the claim that China and Taiwan should reunite since the PRC drove the Nationalist Party out of mainland China. It isn't fictitious, it's merely a political wish to merge the two from the PRC side. Similarly, some Nationalists in Taiwan are happy to take back mainland China, as much as the country is divided on whether Taiwan should remain as it is, or should declare its full independence.

Re: Pythagorean Theorem proof in a 2100 year old Chinese book

#8

Any ideas of it's authentic? China is hyper nationalist so I'm initially skeptical. Might be as fictitous as their GDP figures or sovereignty over Taiwan.

2100 years is still younger than Pythagoras's proof, so I don't see an obvious motivation for fabricating it.

Re: Pythagorean Theorem proof in a 2100 year old Chinese book

#10

Any ideas of it's authentic? China is hyper nationalist so I'm initially skeptical. Might be as fictitous as their GDP figures or sovereignty over Taiwan.

> Any ideas of it's authentic?

It is. And it's nothing new and well-known[1]. OP is Fermats library's high resolution picture of the 17th century reproduction.

[1] https://en.wikipedia.org/wiki/Zhoubi_Suanjing

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