Hi,
The main reason to use the comma version rather than the // version
is monotonicity. This is a bit difficult to demonstrate with CDTT,IRV,
since neither version satisfies it. So here's an example using CDTT,FPP
and CDTT//FPP:
9 A
8 B
5 C
2 C>B
CDTT is {a,b,c}. CDTT//FPP elects A. CDTT,FPP elects A.
9 A
8 B>A
5 C
2 C>B
A has been raised on some ballots.
CDTT is {a,b}. CDTT//FPP elects B. CDTT,FPP still elects A.
This example works just as well for CDTT//DSC and CDTT,DSC.
Kevin Venzke
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