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Did Poincaré anticipate Gödel?

83 points| sajid | 11 years ago |mathpages.com | reply

19 comments

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[+] Udik|11 years ago|reply
In my (vane) attempt at reading Melville's Moby Dick I was struck at some point (Chapter 32: Cetology) by the following sentence, floating in a stormy and rather muddy sea of ramblings and jokes:

"Now the various species of whales need some sort of popular comprehensive classification, if only an easy outline one for the present, hereafter to be filled in all its departments by subsequent laborers. As no better man advances to take this matter in hand, I hereupon offer my own poor endeavors. I promise nothing complete; because any human thing supposed to be complete, must for that very reason infallibly be faulty."

[+] pavpanchekha|11 years ago|reply
I don't think this is quite analogous. For one, first-order arithmetic doesn't seem a uniquely human invention. Instead, it seems like it is mathematically universal in a certain way—induction is a thing that appears across all sorts of different logics, and is usually tied to a marked increase in logic strength.

And, there are plenty of logics that are complete, like presberger arithmetic; these logics just happen to be weaker than first-order arithmetic.

[+] hurin|11 years ago|reply
I don't know specifically why the article focuses on Poincare and anticipating Godel (it seems like a bit of a stretch).

But Poincare's writings on the philosophy of mathematics and science are really excellent.

link: http://www.gutenberg.org/files/37157/37157-pdf.pdf

[+] faragon|11 years ago|reply
Such a marvelous mind. From works quoted in the article, I read Poincaré's "Science et méthode" (in its Spanish translation "Ciencia y método") many years ago, being student. Got shocked, in similar way to when I found Bertrand Russell's works. Brilliant, sharp, elegant, kind, insightful, beautiful, and I'm still short in adjectives. I recommend it to everyone.
[+] CurtMonash|11 years ago|reply
It was said that Poincare' was the last person who ever knew all of mathematics.
[+] danbmil99|11 years ago|reply
I don't know, but they both anticipated unicode.
[+] jerf|11 years ago|reply
I remember browsing this site before Unicode was even a vague plan. The march of charsets has not been kind to the site. But if you use that as an excuse to sneer and pass over it, you will be missing out on a true unsung gem. At least, if you like math. This is the sort of site that the web was created for in the first place.

I recommend "Reflections on Relativity" if you need a concrete starting place. Here on HN over the years I have wished it would be published at various times, but I am now happy to say I have a physical copy, despite having read it online at least three times before. It was worth it just to see it typeset properly.

[+] alricb|11 years ago|reply
If you're going to put the umlaut on the ö, you might as well put the acute accent on the é: Poincaré. Otherwise the e would be silent.
[+] mh-cx|11 years ago|reply
... or if you can't type ö on your keyboard, at least write “oe“ as in Goedel. Just a little hint from a German native here. (Same goes for ae and ue instead of ä and ü).