In this paper, the maximum principles for solutions of four classes of semi-linear ellipic equations are established.
文章主要建立了四类四阶半线性椭圆型方程解的极大值原理，并得到了相应边值问题的解的唯一性定理。
By the maximum principles and reflection principles, the blow-up of positive solutions of a biomathematics model was studied, and blow-up set and blow-up rate are obtained.
利用反演原理和极值原理讨论了一类生物数学模型正解的爆破现象，获得了解的爆破集和爆破率。
The proof method used in this paper is based on two-dimension slot-number phase diagram, unit winding, and the maximum common divided principles.
该文所用的证明方法是基于二维槽号相位图、单元绕组和最大公约数法则。
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