Composition of functions
Main theorem of this paper: Let \(f\) and \(g\) be functions mapping the real line into the real line (\(f\) be surjective). If \(g\circ f\) is continuous and \(f\) is Darboux, then \(g\) is continuous. If \(g\circ f\) is Darboux and \(f\) is continuous, then \(g\) is Darboux.
scientific article; zbMATH DE number 1533038