Since I first encountered ultraproduct I had a feeling that Łoś’s theorem is a kind of a voting scheme on the set of indices in the ultraproduct This happened to be a relatively well known interpretation, developed mostly in the theory of social choice. Still, I felt that it is worthwhile to document a clean mathematical treatment of the issue, which I did in this preprint.
Posted by: Alexandre Borovik | December 28, 2008
Consitent group choice and ultrafilters
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