Mathematical Social Sciences最新文献_第2页

Brand spillovers as shadow enforcement: Endogenous liability regimes in correlated experience goods markets 作为影子执法的品牌溢出：相关体验商品市场的内生责任制度

IF 0.7 4区经济学

Mathematical Social Sciences Pub Date : 2026-03-01 Epub Date: 2026-02-02 DOI: 10.1016/j.mathsocsci.2026.102512

Yizheng Chen , Jingkui Li , Guoqiang Tian

引用次数: 0

On the threshold representation of partial orderings 关于偏序的阈值表示

IF 0.7 4区经济学

Mathematical Social Sciences Pub Date : 2026-03-01 Epub Date: 2026-02-17 DOI: 10.1016/j.mathsocsci.2026.102516

Daniele Caliari , Davide Carpentiere

引用次数: 0

The conceivable scope of negligence rules for internalizing multidirectional externalities 过失行为的可想象范围规定了多向外部性的内部化

IF 0.7 4区经济学

Mathematical Social Sciences Pub Date : 2026-03-01 Epub Date: 2025-12-30 DOI: 10.1016/j.mathsocsci.2025.102493

Urs Schweizer

引用次数: 0

Geographical poverty core formation in a spatial Solow growth model 空间Solow增长模型中的地理贫困核心形成

IF 0.7 4区经济学

Mathematical Social Sciences Pub Date : 2026-03-01 Epub Date: 2026-01-16 DOI: 10.1016/j.mathsocsci.2026.102507

Gonzalo F. de-Córdoba , Gonzalo Galiano

{"title":"Geographical poverty core formation in a spatial Solow growth model","authors":"Gonzalo F. de-Córdoba , Gonzalo Galiano","doi":"10.1016/j.mathsocsci.2026.102507","DOIUrl":"10.1016/j.mathsocsci.2026.102507","url":null,"abstract":"<div><div>This paper develops the concept of poverty core, a novel framework that extends the traditional notion of poverty traps by incorporating the dynamics of irreversibility and complete capital depletion. While poverty traps describe self-reinforcing cycles of deprivation that hinder economic mobility, a poverty core emerges when an already vulnerable system experiences a random exogenous shock—such as a natural disaster, armed conflict, financial collapse, or health crisis—that destroys natural, physical, and human capital beyond the threshold required for recovery. Unlike poverty traps, which may be escaped through gradual investment or policy intervention, a poverty core represents an absorbing state of destitution where normal economic mechanisms are no longer sufficient to restore livelihoods.</div><div>To formally model the transition from poverty traps to poverty cores, we extend the Solow growth framework by incorporating divergence operators and introducing a nonlinear depreciation function that accounts for capital depletion under extreme shocks. This modification captures how spatial and structural economic vulnerabilities amplify depreciation rates beyond sustainable levels, leading to economic divergence instead of convergence. The model demonstrates that under specific conditions—where capital loss surpasses a critical threshold—economic collapse becomes irreversible, mathematically distinguishing poverty cores from conventional poverty traps.</div><div>Our findings contribute to the literature on economic fragility, disaster-induced poverty, and sustainability by providing a new theoretical and mathematical framework to identify cases where poverty becomes irreversible. Recognizing poverty cores as distinct from traditional traps is essential for designing effective interventions in post-shock environments, ensuring that affected communities are not left in perpetual economic collapse.</div></div>","PeriodicalId":51118,"journal":{"name":"Mathematical Social Sciences","volume":"140 ","pages":"Article 102507"},"PeriodicalIF":0.7,"publicationDate":"2026-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145979661","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"经济学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Skeptical and credulous belief updating under black box recommendations 怀疑和轻信的信念在黑盒建议下更新

IF 0.7 4区经济学

Mathematical Social Sciences Pub Date : 2026-03-01 Epub Date: 2026-01-08 DOI: 10.1016/j.mathsocsci.2026.102502

Shohei Yanagita

引用次数: 0

Market adjustment with advection and diffusion in excess demand 过剩需求平流扩散的市场调整

IF 0.7 4区经济学

Mathematical Social Sciences Pub Date : 2026-03-01 Epub Date: 2026-01-08 DOI: 10.1016/j.mathsocsci.2026.102503

Hirokazu Sakane

{"title":"Market adjustment with advection and diffusion in excess demand","authors":"Hirokazu Sakane","doi":"10.1016/j.mathsocsci.2026.102503","DOIUrl":"10.1016/j.mathsocsci.2026.102503","url":null,"abstract":"<div><div>Although it is extremely rare for real markets to adjust excess demand through the Walrasian tâtonnement, the standard in market adjustment theory, it is also true that excess demand is eventually eliminated. This gap suggests that some other factors, besides the price mechanism, contribute to adjusting excess demand. We hypothesize that consumers and firms, and therefore excess demand, spill over into neighboring markets in response to price differences that arise between markets. This motion must contribute to ameliorating excess demand. It is rational for some consumers (firms) to shift to markets where the prices of commodities are lower (higher) if price differences arise beyond those due to the characteristics of the commodities. Furthermore, excess demand fluctuates depending on the actions of consumers and firms. Thus, we study an economy in which excess demand advects and diffuses owing to price gradients. The application of partial differential equations is appropriate for this type of analysis.</div><div>Specifically, we model market price adjustment and the way consumers and firms respond by shifting toward other markets, thus causing excess demand to spill over and disperse. We represent these flows as advection and diffusion driven by price gradients and formalize their dynamics using partial differential equations. We prove that the competitive equilibrium price is locally and exponentially stable under certain conditions.</div></div>","PeriodicalId":51118,"journal":{"name":"Mathematical Social Sciences","volume":"140 ","pages":"Article 102503"},"PeriodicalIF":0.7,"publicationDate":"2026-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145979658","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"经济学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

From neighbors to components: The equivalence of fairness for neighbors and gap preservation 从邻居到组件：邻居的公平性和间隙保留的等价性

IF 0.7 4区经济学

Mathematical Social Sciences Pub Date : 2026-03-01 Epub Date: 2026-01-29 DOI: 10.1016/j.mathsocsci.2026.102510

Takaaki Abe

引用次数: 0

R&D cooperation and spillovers: When do research joint ventures improve welfare? 研发合作与溢出效应：研究合资企业何时能提高福利？

IF 0.7 4区经济学

Mathematical Social Sciences Pub Date : 2026-01-01 Epub Date: 2025-12-03 DOI: 10.1016/j.mathsocsci.2025.102489

Yassine Badra , Bertrand Chopard , Huizhong Liu

引用次数: 0

Less risk, more effort: How overconfidence reshapes tournament strategies 少冒险，多努力：过度自信如何重塑锦标赛策略