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 [12.17] 
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Joined: 31 Jul 2011, 21:07
Posts: 2
Post [12.17]
I can't think of a nice argument for the 2\pi loop not to be shrinkable, the 4\pi loop obviously is. How does one prove things like that?


31 Jul 2011, 21:24
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Joined: 07 Jun 2008, 08:21
Posts: 235
Post Re: [12.17]
Hi
Have you looked at the proposed solution here on the forum?
viewtopic.php?f=19&t=1415
Regards
Vasco


01 Aug 2011, 06:32

Joined: 31 Jul 2011, 21:07
Posts: 2
Post Re: [12.17]
Hi Vasco,

maybe I am too strict, but I think it is not rigid enough of being a proof.

But if it was that, what was intended, it's ok.

Frank


17 Sep 2011, 22:43
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