A functional is invariant under the composition operator when for every . On a compact metric space, a point-evaluation functional can be averaged along an orbit, and a weak-star convergent subsequence of those averages produces an invariant functional.
Articles by others on the same topic
The term "composition operator" can refer to different concepts in various fields, primarily in mathematics, computer science, and logic. Here are a few interpretations depending on the context: ### 1. Mathematics (Function Composition) In mathematics, a composition operator usually refers to the process of combining two functions.