Online Social Choice and Welfare Seminar: Harvey Lederman, Tuesday 3 February
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Marcus Pivato
Jan 28, 2026, 1:27:28 PM (5 days ago) Jan 28
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 (3 February). Here are the details.
Time: 8PM GMT (12PM Vancouver, 2PM Austin, 3PM Toronto/Montréal, 5PM Rio de Janeiro, 8PM London, 9PM Paris, 11PM Istanbul, 9AM Wednesday in Auckland)
Speaker: Harvey Lederman (University of Texas, Austin)
Title: "Maximal Social Welfare Relations on Infinite Populations Satisfying Permutation Invariance"
Abstract: We study social welfare relations (SWRs) on an infinite population. Our main result is a characterization of the common core shared by prominent utilitarian SWRs over distributions which realize finitely many welfare levels on this population. We characterize them as the largest SWR (with respect to set-inclusion when the weak relation is viewed as a set of pairs) which satisfies Strong Pareto, Permutation Invariance (elsewhere called ``Relative Anonymity'' and ``Isomorphism Invariance''), and a further ``Pointwise Independence'' axiom.
(Joint work with Jeremy Goodman)
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 (3 February). Here are the details.
Time: 8PM GMT (12PM Vancouver, 2PM Austin, 3PM Toronto/Montréal, 5PM Rio de Janeiro, 8PM London, 9PM Paris, 11PM Istanbul, 9AM Wednesday in Auckland)
Speaker: Harvey Lederman (University of Texas, Austin)
Title: "Maximal Social Welfare Relations on Infinite Populations Satisfying Permutation Invariance"
Abstract: We study social welfare relations (SWRs) on an infinite population. Our main result is a characterization of the common core shared by prominent utilitarian SWRs over distributions which realize finitely many welfare levels on this population. We characterize them as the largest SWR (with respect to set-inclusion when the weak relation is viewed as a set of pairs) which satisfies Strong Pareto, Permutation Invariance (elsewhere called ``Relative Anonymity'' and ``Isomorphism Invariance''), and a further ``Pointwise Independence'' axiom.
(Joint work with Jeremy Goodman)
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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