identity morphism

例句：

1. 1.In mathematics, the identity morphism is a special type of mapping that preserves the identity of elements.
   在数学中，同态映射是一种特殊类型的映射，它保持元素的恒等性。
2. 2. The identity morphism for the group operation can be used to determine the order of elements in the group.
   群运算的同态映射可以用来确定群中元素的顺序。
3. 3. In computer science, the concept of an identity morphism is important in understanding how objects are represented and manipulated within a programming language.
   在计算机科学中，同态映射的概念对于理解如何在编程语言中表示和操作对象至关重要。