Title: Möbius functions, incidence algebras, and power series representations
Subjects: Incidence algebras, Möbius function, Power series, Potenzreihe, Möbius, Fonction de, Möbius-transformaties, Generating functions, Möbius-Funktion, Inzidenzalgebra, Series de puissances, Sorozatok (matematika), Algebres d'incidence, Möbius-fuggvenyek, Moöbius-Umkehrformel, Potenzreihendarstellung, Algebraic functions, Algebra, Mathematics