A correct version of Lemma 2.3 and Theorem 2.4 in Isoperimetric Inequalities for the Principal Eigenvalue of a Membrane and the Energy of Problems with Robin Boundary Conditions [J. Convex Analysis 22(3) (2015) 627–640] is presented.

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  1. C. Bandle, M. Flucher: Harmonic radius and concentration of energy; hyperbolic radius and Liouville’s equations ∆U = eU and ∆U = U (n+2)/(n−2), SIAM Review 38 (1969) 191–238.https://doi.org/10.1137/1038039Google Scholar
  2. C. Bandle, A. Wagner: Isoperimetric inequalities for the principal eigenvalue of a membrane and the energy of problems with Robin boundary conditions, J. Convex Analysis 22(3) (2015) 627–640.https://doi.org/10.68381/jca22031Google Scholar
  3. C. Bandle, A. Wagner: Shape optimization for an elliptic operator with infinitely many positive and negative eigenvalues, Adv. Nonlinear Analysis 7 (2018) 49–66.https://doi.org/10.1515/anona-2015-0171Google Scholar
  4. P. Cardaliaguet, R. Tahraoui: On the strict concavity of the harmonic radius in dimension N ≥ 3, J. Math. Pures Appl. (9) 81(2) (2002) 223–240.https://doi.org/10.1016/S0021-7824(01)01246-6Google Scholar
  5. J. Hersch: Transplantation harmonique, transplantation par modules, et théorèmes isopérimétriques, Comment. Math. Helv. 44 (1969) 354–366.https://doi.org/10.1007/BF02564535Google Scholar

C. Bandle, A. Wagner. “Erratum to: Isoperimetric Inequalities for the Principal Eigenvalue of a Membrane and the Energy of Problems with Robin Boundary Conditions.” Journal of Convex Analysis 26 (2019), No. 3, 903–909. https://doi.org/10.68381/jca26048