【摘要】 本文介绍几类不同区域上的反应扩散问题，这些问题描述了种群的空间扩张现象。对比经典的Cauchy问题，本文给出固定区域、演化区域和自由边界上的扩散问题，根据相应问题的理论结果，分析不同区域上扩散的区别和联系。更多还原

【Abstract】 Reaction-diffusion problems in several different types of domains are investigated in this paper, which describes spatial expansion of population. Compared with the classical Cauchy problem, diffusion problems are presented in fixed domains, evolving domains and free boundaries. According to the theoretical results of the corresponding problems, the differences and connections of diffusion in different domains are analyzed.更多还原