Re: [EM] Geometric Condorcet cycle example, improved

2009-12-29 Thread Jobst Heitzig
Hi folks,

I just recalled that four years ago I constructed a sophisticated
example which is somewhat similar:
http://lists.electorama.com/htdig.cgi/election-methods-electorama.com/2005-May/015982.html

Happy New Year!
Jobst


Warren Smith schrieb:
 This point-set also works:
 A=(1,0) B=(0,4) C=(3,5) D=(9,2)
 
 

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Re: [EM] Geometric Condorcet cycle example, improved

2009-12-29 Thread fsimmons
Warren,Thanks for upgrading my example to be valid for the L^1 through 
L^infinity cases.  Of course, it's still true that four points are needed, 
since the proof that there is no example like this with three relies only on 
the triangle inequality, which is satisfied for any metric.Jobst,I remember 
that example, and I'm sure that it was a subconscious
influence on my trapezoid example.  Certainly, your point in the last
paragraph

Aren't such examples a good reason to always consider more than just onepiece 
of the information (like approval or ranks or defeats or directsupport) and 
instead combine them to get the whole picture?is the most important lesson to 
learn from such examples.Guten Rutsch,Forest
- Original Message -From: Jobst Heitzig Date: Tuesday, December 29, 
2009 4:51 amSubject: Re: [EM] Geometric Condorcet cycle example, improvedTo: 
Warren Smith Cc: election-methods , Forest W Simmons  Hi folks,  I just 
recalled that four years ago I constructed a sophisticated example which is 
somewhat similar: http://lists.electorama.com/htdig.cgi/election-methods- 
electorama.com/2005-May/015982.html  Happy New Year! Jobst   Warren Smith 
schrieb:  This point-set also works:  A=(1,0) B=(0,4) C=(3,5) D=(9,2)   
 

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