Introduction to the Krugman model

Paul. Krugman is currently a professor of economics in the Department of Economics at MIT. Krugman's main research areas include international trade, international finance, currency crises and exchange rate change theory. The new international trade theory he created analyzed and explained the impact of income growth and imperfect competition on international trade. His theoretical thoughts are original, and he often notices important economic issues before others, and then builds admirably profound, concise and elegant models, waiting for further research by other latecomers. He is known as one of the most eye-catching trade theorists in the world today, and his prediction of the Asian financial crisis in 1994 made him a rising star on the international economic stage. He currently serves as an economic policy advisor to many countries and regions. Krugman is the successor and defender of the mainstream school of economics, a favorite of Samuelson and Solow (the three of them share an office suite). But at the same time, Krugman is a pioneer who dares to fight against any traditional theory. In the past ten years, he has published nearly twenty books and hundreds of articles. His writing style is clear, fluent, and easy to understand. He is not only a must-read for professional researchers, but also a good teacher and helpful friend for the general public. In the eyes of the public, he is a rare popular economist