Funktioteoria
Funktioteoria, often translated as "function theory," is a branch of mathematics that deals with the study of functions. It is a broad and fundamental area encompassing various types of functions and their properties. At its core, funktioteoria investigates relationships between sets, where for each element in a first set, there is a unique corresponding element in a second set. This concept is central to understanding how quantities change and relate to each other in mathematical models and real-world phenomena.
The field of funktioteoria includes the study of real-valued functions of one or more real variables, as