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Public Persuasion with Endogenous Fact-Checking
No full textWe study public persuasion when a sender communicates with a large audience that can fact-check at heterogeneous costs. The sender commits to a public information policy before the state is realized, but any verifiable claim she makes after observing the state must be truthful (an ex-post implementability constraint). Receivers observe the public message and then decide whether to verify; this selective verification feeds back into the sender’s objective and turns the design problem into a constrained version of Bayesian persuasion. Our main result is a reverse comparative static: when factchecking becomes cheaper in the population, the sender optimally supplies a strictly less informative public signal. Intuitively, cheaper verification makes bold claims invite scrutiny, so the sender coarsens information to dampen the incentive to verify. We also endogenize two ex-post instruments—continuous falsification and fixed-cost repression—and characterize threshold substitutions from persuasion to manipulation and, ultimately, to repression as monitoring improves. The framework provides testable predictions for how transparency, manipulation, and repression co-move with changes in verification technology
L’arrêté municipal mettant en demeure les occupants sans titre de la voirie de la remettre en état, bien que pris au visa de l'article L. 2212-2 du code général des collectivités territoriales, n'est pas détachable de la procédure de répression des infractions à la police de la conservation du domaine public routier – note sous CE, 9 mai 2025, n° 489587, Cne de Montfuron.
No full textDu partage des compétences juridictionnelles pour l’action en responsabilité du fait de la destruction d’un monument funéraire – note sous TC, 2 juin 2025, n° C4344, Cne de Saint-Laurent sur Saône.
No full textSPORT ET LAICITE, histoire, philosophie et droit
No full textLa laïcité exalte la puissance de concorde et d’accomplissement qui fait tout le prix de l’activité sportive. Pour le montrer il fallait un petit livre pluridisciplinaire. Histoire, philosophie, et droit. C’est chose faite avec cet ouvrage.
On y trouvera un aperçu historique qui raconte l’épanouissement du sport dans l’éducation des jeunes gens. On y puisera aussi les principes philosophiques de la laïcité qui orientent le sport vers la paix et le respect mutuel. On en tirera enfin des repères juridiques précieux pour tous les sportifs, quel que soit le cadre de leur pratique et, plus largement, pour toutes les personnes qui ont en charge l’organisation et la gestion d’une structure sportive
Swarm dynamics for global optimization on finite sets
No full textConsider the global optimisation of a function defined on a finite set endowed with an irreducible and reversible Markov generator. By integration, we extend to the set of probability distributions on and we penalize it with a time-dependent generalized entropy functional. Endowing with a Maas’ Wasserstein-type Riemannian structure enables us to consider an associated time-inhomogeneous gradient descent algorithm. There are several ways to interpret this -valued dynamical system as the time-marginal laws of a time-inhomogeneous non-linear Markov process taking values in , each of them allowing for interacting particle approximations. This procedure extends to the discrete framework the continuous state space swarm algorithm approach of Bolte et al. (2023), but here we go further by considering more general generalized entropy functionals for which functional inequalities can be proven. Thus in the full generality of the above finite framework, we give conditions on the underlying time dependence ensuring the convergence of the algorithm toward laws supported by the set of global minima of . Numerical simulations illustrate that one has to be careful about the choice of the time-inhomogeneous non-linear Markov process interpretation
