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Abstract <p> The article studies a model of international trade between two countries undermonopolistic competition of producers. The utility functions of consumers are additivelyseparable. Transport costs are of the iceberg type. The production cost function is nonlinear:marginal costs are a decreasing function of R&amp;D investments. The article considers marketequilibrium in autarky situation, when transport costs are so high that international trade ceases.Comparative statics is carried out on transport costs of equilibrium variables (individualconsumption, size and mass of firms, and prices), as well as social welfare.</p>

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A model of International Trade with R&D Investment under Monopolistic Competition: Equilibrium in Autarky Situation

  • 期刊论文

  • 发表日期：

    2025年6月1日

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  • I. A. Bykadorov

摘要

Abstract

The article studies a model of international trade between two countries undermonopolistic competition of producers. The utility functions of consumers are additivelyseparable. Transport costs are of the iceberg type. The production cost function is nonlinear:marginal costs are a decreasing function of R&D investments. The article considers marketequilibrium in autarky situation, when transport costs are so high that international trade ceases.Comparative statics is carried out on transport costs of equilibrium variables (individualconsumption, size and mass of firms, and prices), as well as social welfare.