引入复拟(概率)随机变量，准范数的定义。

Firstly, the definitions of complex quasi-random variable and primary norm are introduced.

youdao

利用范数形式的锥拉伸与压缩不动点定理，研究了一类四点边值问题拟对称正解的存在性。

By using the fixed-point theorem of cone expansion-compression type with norm, we study the existence of positive pseudo-symmetric solutions to a four-point boundary value problem.

youdao