In the context of mathematics and differential equations, a **Liouvillian function** is defined in relation to the field of differential algebra, particularly the study of solutions to differential equations. A Liouvillian function is one that can be expressed in terms of a finite combination of well-known functions and operations, including: 1. Algebraic operations (addition, subtraction, multiplication, division). 2. Exponential and logarithmic functions. 3. Integration of Liouvillian functions.
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