A classification of bisymmetric polynomial functions over integral domains of characteristic zero

We describe the class of n-variable polynomial functions that satisfy Acz\'el's bisymmetry property over an arbitrary integral domain of characteristic zero with identity

Rosalie: the brazilian female monkey of Charcot Rosalie: a pequenina macaca brasileira de Charcot

Jean-Martin Charcot, the father of Neurology, a very austere and reserved man that did not express affection freely for human being, had a profound affection to animals, particularly to a small female monkey, called "Rosalie", which came from Brazil and was a gift of Dom Pedro II to Charcot.<br>Jean-Martin Charcot, considerado o pai da Neurologia, foi um homem de aspecto austero e reservado, que tinha dificuldades de expressar os seus sentimentos para outros seres humanos. Contudo ele tinha profunda afeição por animais, particularmente por uma pequena macaca, chamada de "Rosalie", oriunda do Brasil e que foi um presente dado a ele por Dom Pedro II

Self-commuting lattice polynomial functions on chains

We provide sufficient conditions for a lattice polynomial function to be self-commuting. We explicitly describe self-commuting polynomial functions on chains