“…What we have already said is about the definition of hyperlattice introduced by Konstantinidou and Mittas in [4] and used in [5][6][7] as well. Later some authors working on the subject, just after the Definition 1.1, they added: "Let A, B ⊆ L. Then define A ∨ B = {a ∨ b | a ∈ A, b ∈ B} and A ∧ B = {a ∧ b | a ∈ A, b ∈ B}" (see, for example [1,2]). But this, written in a wrong place (and not only), make the definition still unreadable.…”