Volkmer, Hans Extending Peano derivatives: Necessary and sufficient conditions. (English) Zbl 0945.26008 Fundam. Math. 159, No. 3, 219-229 (1999). The author considers \(k\) times Peano differentiable functions \(f:A \to \mathbb{R}\), where \(A \subset [0,1]\) is closed. He describes the case in which there exists a \(k\) times Peano differentiable extension \(g:[0,1] \to [0,1]\) of such functions. Reviewer: Z.Grande (Bydgoszcz) MSC: 26A24 Differentiation (real functions of one variable): general theory, generalized derivatives, mean value theorems Keywords:Denjoy index; Peano derivatives; symmetric perfect sets; extension PDFBibTeX XMLCite \textit{H. Volkmer}, Fundam. Math. 159, No. 3, 219--229 (1999; Zbl 0945.26008) Full Text: EuDML