New methods to construct uninorms on bounded lattices via uninorms defined on their sublattices

In this paper, we present two methods for constructing uninorms on a bounded lattice L based on a uninorm defined on the sublattice [ 0,a] 0 , a (or [ b,1] b , 1 ) of L . We also examine the relationships between these methods and existing construction approaches in the literature. Furthermore, we provide several illustrative examples that demonstrate the effectiveness of the proposed constructions.