New families of uninorms constructed by a uninorm on a sublattice of a bounded lattice

In this paper, we introduce two construction approaches for uninorms on a bounded lattice by virtue of uninorms determined on its sublattices. We also demonstrate that the uninorms obtained by our approaches distinguish themselves from the existing ones because the uninorms defined on sublattices stem from combinations of t-norms and t-conorms. Additionally, we describe some examples to illustrate these uninorms.