1,547 research outputs found
Some forgotten equilibria of the Bertrand duopoly!?
No full textThis note analyzes the Bertrand duopoly with constant but asymmetric marginal costs on a market with homogenous products. It is shown that there exist some equilibria that are ignored in the literature on IO. In addition, in this setting (perfectly or nearly perfectly) competitive equilibria exist.
Correspondance de Leonhard Euler avec L. Bertrand, Ch. Bonnet, M. M. Bousquet, J. de Castillon, G. Cramer, Ph. Cramer, G. Cuenz, A. von Haller, G. L. Lesage, J. M. von Loen, J. C. Wettstein
No full textThis volume of the Opera omnia includes Euler's correspondences in French with his Swiss countrymen Louis Bertrand, Charles Bonnet, Marc-Michel Bousquet, Jean de Castillon, Gabriel Cramer, Philibert Cramer, Gaspard Cuentz, Albrecht von Haller, Georges-Louis Lesage et Johann Caspar Wettstein, and one letter to the German Johann Michael von Loen who is mentioned in the Euler-Bertrand correspondence. The first letter from Euler to d'Alembert recently rediscovered has been added as supplement. Whereas the correspondence with Gabriel Cramer and Georges-Louis Lesage deals mainly with mathematical and physical subjects (Cramer's rule, Cramer's paradox, Lesage's theory of gravity), many letters exchanged with other Swiss correspondents provide new information about Euler's non-scientific activities, like the commerce of almanacs, negotiations with publishers, the support of young scientists in search of a position, and a variety of private matters. ----- Ce volume contient les correspondances qu'Euler a entretenues avec plusieurs compatriotes suisses en langue française. Il s'agit de Louis Bertrand, Charles Bonnet, Marc-Michel Bousquet, Jean de Castillon, Gabriel Cramer, Philibert Cramer, Gaspard Cuentz, Albrecht von Haller, Georges-Louis Lesage et Johann Caspar Wettstein. Bien qu'il n'ait pas été suisse, une lettre de Johann Michael von Loen, personnage mentionné dans la correspondance Euler-Bertrand, figure également dans ce volume. De plus, la première lettre d'Euler à d'Alembert récemment redécouverte a été ajoutée en annexe.Tandis que les correspondances avec Gabriel Cramer et Georges-Louis Lesage portent essentiellement sur des sujets de mathématiques et de physique (règle de Cramer, paradoxe de Cramer, théorie de la gravitation de Lesage), une grande partie des lettres qu'Euler a échangées avec d'autres compatriotes reflètent ses activités non scientifiques, comme le commerce d'almanachs, les négociations avec des éditeurs-imprimeurs à propos de la publication de ses ouvrages, ses interventions en faveur de jeunes scientifiques à la recherche d'un poste, et des affaires privées
Heterogeneous Behavioral Rules in the Oligopolistic Case
No full textIn a static symmetric duopoly the set of behavioral rules is extended to different types of markup pricing. Using an equilibrium concept suggested in Pasche (2001), it is shown that dependend on the markup neither pure Cournot nor pure Bertrand behavior is a behavioral equilibrium profile. Instead, there is a rationale for the usage of simple heuristics. The presence of markup rules leads to Stackelberg outcomes. Furthermore, pure markup behavior is more competitive than in Cournot case but less competitive than in Bertrand case. It is shown, that multiple behavioral equilibria and heterogeneous behavior may arise, where at least one player uses price setting strategies.oligopoly, markup rules, heterogeneity, behavioral equilibrium.
A Bertrand-Edgeworth-oligopóliumok (Bertrand-Edgeworth oligopolies – a survey of the literature)
No full textAz irodalomban az olyan oligopolmodellek, amelyekben mind az ár, mind a mennyiség döntési változó, Bertrand-Edgeworth-oligopóliumok néven ismertek. E tanulmányban a Bertrand-Edgeworth-oligopóliumokkal kapcsolatos érdekesebb eredményeket tekintjük át. Tárgyaljuk a Bertrand-Edgeworth-típusú oligopolmodellek specifikációját, a Nash-egyensúly létezését, a Nash-egyensúly meghatározását és a Bertrand-Edgeworth-oligopóliumok alkalmazásait. / === / Oligopoly models in which both price and quantity are decisive variables are known in the literature as Bertrand-Edgeworth oligopolies, the most interesting results with which are surveyed in this paper. The author assumes the existence of the Nash equilibrium, as the specification of Bertrand-Edgeworth-type oligopoly models, the determination of the Nash equilibrium, and the application of Bertrand-Edgeworth oligopolies
Data used for the spatio-temporal analysis of the climatic debt observed in understory plant communities
No full textDetails about the variables' computation and definition are provided in Bertrand 2018 and Bertrand et al. 2016. References: Bertrand, R.et al. (2016) Ecological constraints increase the climatic debt in forests. Nature communications 7: 12643. Bertrand, R. (2018) Unequal contributions of species’ persistence and migration on plant communities’ response to climate warming throughout forests. Ecography. Accepted Author Manuscript
Le origini del liberalsocialismo di Bertrand Russell
No full textIl saggio prende in esame le origini del liberalsocialismo di Bertrand Russell. Afferma che tutte le tesi maggiori dell'autore inglese sono presenti nelle prime opere politiche che pubblica.The essay deals with the origins of the liberal socialism of Bertrand Russell. The thesis is that all major ideas of the english author are present in first political books he publish
Bertrand Russell y el pragmatismo
No full textThis paper analyzes the two stages of the relationship of the British philosopher Bertrand Russell withpragmatism. The first section reviews the criticisms that the author made to American pragmatists.The second exposes Russell’s pragmatic turn, exposing the causes of this turn and its consequences. This paper argues that both stages should be understood in the context of the discussions about truth that were observed in philosophy in the first decades of the 20th century
Cournot and Bertrand in shipping models with circular markets
No full textWe investigate two shipping (delivered pricing) duopoly models with circular markets, Cournot and Bertrand. In the Cournot model, maximal distance between two firms becomes the unique equilibrium outcome if transport cost is increasing with distance, irrespective of whether the transport cost function is convex or concave. This result is robust in the sense that cost heterogeneity between two firms does not change the result. In contrast to the Cournot model, this location pattern can fail to be an equilibrium in the Bertrand model. Copyright (c) 2006 the author(s). Journal compilation (c) 2006 RSAI.
On Timelike Bertrand Curves In Minkowski 3-Space
No full textIn this paper, we study the timelike Bertrand curves in Minkowski 3-space. Since the principal normal vector of a timelike curve is spacelike, the Bertrand mate curve of this curve can be a timelike curve, a spacelike curve with spacelike principal normal or a Cartan null curve, respectively. Thus, by considering these three cases, we get the necessary and sufficient conditions for a timelike curve to be a Bertrand curve. Also we give the related examples.TUBITAK (The Scientific and Technological Research Council of Turkey)Turkiye Bilimsel ve Teknolojik Arastirma Kurumu (TUBITAK)The authors express thanks to the referees for their valuable suggestions. The first author would like to thank TUBITAK (The Scientific and Technological Research Council of Turkey) for their financial supports during his PhD studies
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