On migrativity property for uninorms

Recently, (α,U0)(α,U0)-migrative uninorms U were introduced and discussed, where U   and U0U0 are two uninorms with neutral element e  . In this paper, we will further study (α,U2)(α,U2)-migrative uninorms U1U1, where U1U1 and U2U2 are two uninorms with different neutral elements e1e1 and e2e2, respectively. All cases when the uninorm U1U1 and U2U2 are in different families out of the most usual classes of uninorms are analyzed, characterizing all solutions of the migrativity equation for some possible combinations of U1U1 and U2U2.