From a theorem of R. Ger and T. Kochanek to marginal joints of means
From a theorem of R. Ger and T. Kochanek to marginal joints of means
We answer in the negative a problem posed in Daróczy (Report on 52nd International Symposium on Functional Equations. Aequat. Math., 2015) by the first author, in connection with a result of Ger and Kochanek (Colloq Math 115:87–99, 2009), and its generalization formulated in Daróczy et al. (Report on 52nd International …