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Maybe I am wrong, the two diagram sets I saw are not "equivalent" in my
eye.
<br>Can someone provide a better term than "equivalent"...
<br>It's OK for the right ones, but not for the left ones.
<br>(A=C) > B and (A=C) > D is "equivalent" to (A=C)
> (B=D)
<br>A > B and C > D is not "equivalent" to A > B, A > D, C > B and
C > D
<br>because first case allows A>B>C>D and second does not.
<br>Did I miss something?
<br>The last classification seems to miss the disjoint cases of undecidness,
<br>maybe it should be a third class.
<p>Steph
<p>Steve Eppley a écrit :
<blockquote TYPE=CITE><?xml version="1.0" ?><font face="Courier New"><font color="#0000FF">The</span><span style="font-size:12pt"></font>>
difference shows up easily in the</span><span style="font-size:12pt"><font color="#0000FF">
Hasse diagrams </span><span style="font-size:12pt"></font>> of the
corresponding preference quasi-orders:</span><span style="font-size:12pt"><font color="#0000FF">> </span><span style="font-size:12pt">>
undecidedness: equivalence:</span><span style="font-size:12pt">>
A C A=C</span><span style="font-size:12pt">>
| | / \</span><span style="font-size:12pt">>
| | /
\</span><span style="font-size:12pt">> B D
B D</span><span style="font-size:12pt">> </font></font></span>
<br>
<br>
<br>
<p><font face="Courier New"> So, </span><span style="font-size:12pt">to
avoid confusing the issues when studying </span><span style="font-size:12pt">the
difference between undecidedeness and </span><span style="font-size:12pt">equivalence
on voter behavior, I think we</span><span style="font-size:12pt">should
prefer an example such as this:</span><br/><span style="font-size:12pt">
undecidedness equivalence</span><span style="font-size:12pt">
A C
A=C</span><span style="font-size:12pt"> |\
/|
|</span><span style="font-size:12pt"> | \/ |
|</span><span style="font-size:12pt"> | /\ |
|</span><span style="font-size:12pt"> |/
\|
|</span><span style="font-size:12pt"> B
D
B=D</font></span><br/></blockquote>
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