Online Social Choice and Welfare Seminar: Susumu Cato, Tuesday 15 April
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Marcus Pivato
Apr 9, 2025, 4:24:43 AMApr 9
to social-choice-a...@googlegroups.com, com...@duke.edu
[with apologies for cross-posting]
Dear all,
The next presentation in the Online Social Choice and Welfare Seminar will be next Tuesday (15 April). Here are the details.
Time: 9AM GMT (5AM Toronto/Montreal, 6AM Rio de Janeiro, 10AM London, 11AM Paris, 12PM Istanbul, 2:30PM New Delhi, 6PM Tokyo/Seoul, 7PM Sydney, 9PM Auckland)
Speaker: Susumu Cato (University of Tokyo)
Title: Population ethics with thresholds
Abstract: We propose a new class of social quasi-orderings in a variable-population setting. In order to declare one utility distribution at least as good as another, the critical-level utilitarian value of the former must reach or surpass the value of the latter. For each possible absolute value of the difference between the population sizes of two distributions to be compared, we specify a non-negative threshold level and a threshold inequality. This inequality indicates whether the corresponding threshold level must be reached or surpassed in the requisite comparison. All of these threshold critical-level utilitarian quasi-orderings perform same-number comparisons by means of the utilitarian criterion. In addition to this entire class of quasi-orderings, we axiomatize two important subclasses. The members of the first subclass are associated with proportional threshold functions, and the well-known critical-band utilitarian quasi-orderings are included in this subclass. The quasi-orderings in the second subclass employ constant threshold functions; the members of this second class have, to the best of our knowledge, not been examined so far. Furthermore, we characterize the members of our class that (i) avoid the repugnant conclusion; (ii) avoid the sadistic conclusions; and (iii) respect the mere-addition principle.
(Joint work with Walter Bossert and Kohei Kamaga)
Reminder: On the seminar website you can find the video recordings, slides and supplementary materials for all past presentations, as well as information about future presentations.
Dear all,
The next presentation in the Online Social Choice and Welfare Seminar will be next Tuesday (15 April). Here are the details.
Time: 9AM GMT (5AM Toronto/Montreal, 6AM Rio de Janeiro, 10AM London, 11AM Paris, 12PM Istanbul, 2:30PM New Delhi, 6PM Tokyo/Seoul, 7PM Sydney, 9PM Auckland)
Speaker: Susumu Cato (University of Tokyo)
Title: Population ethics with thresholds
Abstract: We propose a new class of social quasi-orderings in a variable-population setting. In order to declare one utility distribution at least as good as another, the critical-level utilitarian value of the former must reach or surpass the value of the latter. For each possible absolute value of the difference between the population sizes of two distributions to be compared, we specify a non-negative threshold level and a threshold inequality. This inequality indicates whether the corresponding threshold level must be reached or surpassed in the requisite comparison. All of these threshold critical-level utilitarian quasi-orderings perform same-number comparisons by means of the utilitarian criterion. In addition to this entire class of quasi-orderings, we axiomatize two important subclasses. The members of the first subclass are associated with proportional threshold functions, and the well-known critical-band utilitarian quasi-orderings are included in this subclass. The quasi-orderings in the second subclass employ constant threshold functions; the members of this second class have, to the best of our knowledge, not been examined so far. Furthermore, we characterize the members of our class that (i) avoid the repugnant conclusion; (ii) avoid the sadistic conclusions; and (iii) respect the mere-addition principle.
(Joint work with Walter Bossert and Kohei Kamaga)
To obtain the Zoom link, please subscribe to the Seminar Mailing List, or contact one of the organisers.
Reminder: On the seminar website you can find the video recordings, slides and supplementary materials for all past presentations, as well as information about future presentations.
--
Marcus Pivato
Centre d'Économie de la Sorbonne
Centre d'Économie de la Sorbonne
Université Paris 1 Panthéon-Sorbonne
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