Showing papers in "Mathematical Social Sciences in 2015"

TL;DR: A comprehensive survey of the researches and the corresponding recent developments in the fields of human decision making and cognition and the benefits of leveraging the quantum-like modeling approaches in computational domains are presented.

TL;DR: It is demonstrated that relative-performance based strategic managerial delegation does not lead to the equivalence of Bertrand and Cournot equilibria in the presence of network externalities, regardless of the strength and type of networkExternalities — positive or negative.

TL;DR: The closely related issue of bribery in judgment aggregation is introduced and study and is inspired by work on bribery in voting.

TL;DR: It is argued that this criterion permits mechanisms that are not fair and an alternative fairness concept called proportional sharing is proposed, which guarantees to each subgroup, such as a social class, gender or ethnic group, a fair probability that at least one of its members will like the final outcome.

TL;DR: It is shown that in the convex–concave technology framework, whenever rich regions are substantially rich diffusion can help poor regions to escape their poverty traps; if however they are not rich enough diffusion might condemn also rich regions to collapse.

TL;DR: The general outlook of the Harsanyian dilemma is confirmed in this more general setting and is extended to a framework allowing for ex ante equity considerations to play a role in the ex post evaluation, and finds a richer configuration of possible criteria.

TL;DR: This work proposes two allocation rules that distribute the value of the efficient coalitional network structure: the atom-based flexible coalitionalNetwork allocation rule and the player-based Flexible Coalitional network allocation rule.

TL;DR: In this article, the authors considered the problem of finding reversal symmetric majority rules that satisfy suitable symmetries and obey the majority principle in the standard arrovian framework, under the assumption that individual preferences and social outcomes are linear orders on the set of alternatives and that individuals and alternatives have been exogenously partitioned into subcommittees and subclasses.

TL;DR: This paper characterize choice correspondences that are rational by two sequential criteria under a mild consistency axiom and rationales ensuring the sequential rationalization are explicitly constructed and a uniquely determined, canonical solution is provided.

TL;DR: This article introduces axioms of invariance from player deletion in presence of a special player if the special player is a nullifying player and the equal division value is characterized by the associated axiom of invariances plus efficiency and balanced cycle contributions.

TL;DR: This paper proposes to measure human development as a fuzzy concept, and derives simple and easily computable formulae for calculating the truth value of the HDI, which is equally applicable to fuzzy rankings with other composite indices.

TL;DR: It is proposed that the success of an argument in favor of an issue position should depend on whether the argument resonates with the audience's values, and a mathematical model is developed to investigate how this difference in broadness of values may drive a change on the population level towards positions in line with the more narrow set of values.

TL;DR: It is proved that several changes of representation that require exponential time can be solved with polynomial-delay and highlight some open problems.

TL;DR: In a repeated principal–agent model with moral hazard, in which the agent has βδ-preferences, the case where the agent is naive in the sense that he is not fully aware of his inconsistent discounting is analyzed.

TL;DR: In this paper, the authors consider an overlapping generations exchange economy where households realize a portfolio choice between money and a bubble and show that when the monetary policy rule responds only to expected inflation, a more active rule can be destabilizing by promoting local indeterminacy and has no impact on the multiplicity of steady states.

TL;DR: It is shown that the set of stable allocations has dual lattice structures, thus reflecting an expected counterposition of interests between both sides of the market.

TL;DR: The Gini index is characterized as the unique function that satisfies the properties of scale invariance, symmetry, proportionality and convexity in similar rankings.

TL;DR: Dubra’s result on the set of lotteries satisfying independence that also satisfies any two of the following three axioms satisfies the third: completeness, Archimedean and mixture continuity is generalized.

TL;DR: This work analyzes the problems of computing the Banzhaf and the Shapley–Shubik power indexes for weighted voting games and proves that calculating them is #P-complete in the strong sense for general graphs and trees.

TL;DR: The Stahl–Rubinstein alternating-offer bargaining procedure is extended to allow players to simultaneously and visibly commit to some share of the pie prior to, and for the duration of, each bargaining round, if commitment costs are small but increasing in the committed share.

TL;DR: A model that bridges the gap between the simplest variation of two benchmark models of strategic network formation: Bala and Goyal’s two-way flow model without decay, and a variation of Jackson and Wolinsky's model based on bilateral formation of links assuming no decay.

TL;DR: A simple example of a quadratic utility function that generates a Giffen demand is provided and a full characterization of the parameter conditions under which the GIFFen demand arises is provided.

TL;DR: This work considers the joint decision of placing public bads in each of two neighboring countries, modelled by two adjacent line segments, and describes all rules satisfying strategy-proofness, country-specific Pareto optimality, non-corruptibility, and the far away condition.

TL;DR: This paper extends the Hotelling model of spatial competition by incorporating the production technology and labor inputs and finds that the equilibrium locations depend on the productionTechnology.

TL;DR: This work shows that for two economies differing uniquely in factor substitutability, the one with the higher elasticity of substitution will have higher long-run growth.

TL;DR: In this article, the authors show that the principle of maximum admissible departure is incompatible with common apportionment properties, such as monotonicity and Hare-quota, and they propose a unique application of the property.

TL;DR: This paper studies the incentives for alliance (coalition) formation and provides an example of an alliance that leads to unlimited seat gains and a full description of a set that guarantees the lack of successful alliance.

TL;DR: This study reports the results of a new, truly representative simulation study, which corrects for the representativeness of the sampled quasi-orders in the IITA algorithms and allows the algorithms to be compared in a reliable manner.

TL;DR: This work introduces a parameterized solidarity property, “ϵ-welfare dominance”, which requires the conclusion of welfare dominance only for arbitrarily small changes in preferences, and characterizes the target rules when combined with efficiency.