目的研究一类耦合型反应扩散系统非负平衡解的存在性。方法运用上下解方法,极值原理和Schauder不动点定理进行研究。结果给出了半平凡解,严格正确的存在的充分条件。结论适当控制扩散状态,系统存在平衡解。
Aim The existence of nonnegative steady-state solutions was investigated for a class of coupled reaction-diffusion systems. Methods The lower-upper solutions methods, maximum principles and Schauder fixed point theories were used. Results The surfficient conditions for semitrivial solutions and strictly positive solutions were given. Conclusions Positive steady-state solutions exist when the diffusion coefficients are cotrolled appropriately.