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西方经济学在资本主义国家从经验研究发展成系统理论经历了漫长的时间,传统的国际贸易理论认为不同国家在资源禀赋上是有区别的,通过对模型的建立、分析,保罗·克鲁格曼(Paul Krugman)证明了在技术水平相同,要素禀赋完全没有区别的极端情况下,国家或地区之间存在贸易的可行性。关于经济地理(Economic Geography)方面的研究,保罗·克鲁格曼沿用他一贯的风格,用数学模型阐述了一国能通过内生变量形成一个以工业为“核心”、农业为“外围”的产业格局。在前人的研究基础上通过数学模型将其阐述、规范、拓展,用更加直观的方式来表达自己的思想,也许是保罗·克鲁格曼同其他经济学家最大的不同。
Western economics has experienced a long period of time in the development of capitalist countries from empirical research into systemic theory. The traditional international trade theory believes that different countries have different resources endowments. Through the establishment and analysis of models, Paul Kruger Paul Krugman proved that in the extreme case where the technical level is the same and the factor endowments are completely indistinguishable, there is trade feasibility between countries or regions. With regard to the study of economic geography, Paul Krugman follows his usual style and uses mathematical models to illustrate that a country can form an industry based on endogenous variables to “core” and agriculture. Peripheral industry pattern. On the basis of the previous research, the author expounds, standardizes, and expands on the basis of a mathematical model, and expresses his thoughts in a more intuitive manner. Perhaps the biggest difference between Paul Krugman and other economists.