theta-function

例句：

1. 1. In mathematics, theta functions are used to represent complex numbers in a way that is more intuitive thanusing the standard complex number system.
   在数学中，θ函数被用来以一种比使用标准复数系统更直观的方式来表示复数。
2. 2. The theta function is a key tool for solving differential equations and finding solutions to problems involving complex numbers.
   θ函数是解决微分方程和寻找涉及复数问题解决方案的关键工具。
3. 3.The theta function has applications in cryptography, where it is used to generate random numbers that are difficult to predict.
   θ函数在密码学中有应用，用于生成难以预测的随机数。