👉 In mathematics, a trimorphism is a type of morphism between two categories that preserves composition and inverses. A trimorphic function can be defined as one where the composition of any two functions in the category is also a function. For example, let's consider the category of sets (S), which has binary operations for addition and multiplication. There are no identity elements because subtraction is not commutative. However, there exists a trimorphic function that maps any set to itself: ```python