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Principia Mathematica

Name: Anonymous 2008-11-15 21:06

Shall I study Russel and Whitehead's Principia Mathematica alongside Godel's work, in order to better understand the context of what Godel did, or is reading PM mathematically pointless apart from historical context?

Name: Anonymous 2008-11-15 21:09

Well, if you'd be interested in reading a 100 page proof that 1+1=2, go for it.

Name: Anonymous 2008-11-15 21:32

Going through the introduction now; I also got a contemporary text on mathematical logic which may help.

I've checked out the first volume of PM a few times over the years for shits and giggles.  The "1+1=2" anecdote is reproduced by Karl Sabbagh in his VERY poor ameteur text "The Riemann Hypothesis", which contains at least five very simple arithmetic errors.  Mercifully, I read Derbyshire shortly afterwards.

Name: Anonymous 2008-11-15 21:35

That book looks dry as dust man. Not to mention fucking hard to understand.

Name: Anonymous 2008-11-16 2:02

>>4

What are you doing here?

Name: Anonymous 2008-11-16 11:35

>>5
Are you saying the book isn't dry? The authors were going to write a fourth volume but they got too bored with it.

Name: Anonymous 2008-11-16 12:36

http://en.wikipedia.org/wiki/Principia_Mathematica

>"From this proposition it will follow, when arithmetical addition has been defined, that 1+1=2." – Volume I, 1st edition, page 379 (page 362 in 2nd edition; page 360 in abridged version).

379 pages and they still hadn't proved 1+1=2 (or even defined addition yet).

Name: Anonymous 2008-11-17 0:57

Yeah but they were able to do it in an overly wordy and pretentious manner so what's your point.

Name: Anonymous 2008-11-17 2:26

>>8

How is it possible to make a mathematical proof too wordy?

Name: Anonymous 2008-11-17 6:37

>>9
Now if you'd asked if it is possible to make a mathematical proof too wordy, that I could have done in a page or two. But no, you had to go ask for a constructive proof. I'm afraid that, as usual, the size of this post won't accomodate the proof that I have which is wonderful that I have discovered.

Name: Anonymous 2008-11-17 6:39

+m

Name: Anonymous 2008-11-17 9:34

>>10

Fair enough.

>>11

anon: ~$ /mode dis.chan.org/sci -m
* AVERAGEANONYMOUS has set mode: -m

Name: Anonymous 2008-11-17 17:57

>>9
My prof in graph theory was always on my case that my proofs were too short and terse, so once, just to piss her off, I spent three (typed) pages on one problem, verifying every little detail all the way down to associativity of addition.

She was not amused.

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