RT journal article T1 General and left-continuous operators on lattice-based sums A1 García Aragón, Roberto A1 Jara, Pascual A1 Medina Moreno, Jesús A2 Matemáticas K1 T-norm K1 Ordinal sum K1 Horizontal sum K1 Lattice sum AB Lattice-based sum provides a procedure to obtain posets and lattices from families of posets and lattices, respectively. Establishing sufficient conditions to ensure the lattice structure was the most significant challenge achieved in previous works. Next steps are to consider structures with general operators defined on the lattices of the family, introduce a sum of these operators on the obtained lattice-based sum and study the properties preserved by this new definition. We will prove that the natural definition preserve, in general, the monotonicity, associativity, commutativity, etc. This paper also introduces a new mechanism focused on preserving the left-continuity property of the operators defined on the lattices. This new approach also preserves the associativity and the infimum of non-empty subsets, and takes into account (infinite) complete lattices, unlike the previous works. PB Elsevier SN 0165-0114 YR 2026 FD 2026 LK http://hdl.handle.net/10498/39079 UL http://hdl.handle.net/10498/39079 LA eng DS Repositorio Institucional de la Universidad de Cádiz RD 09-may-2026