New topology in residuated lattices

Abstract

Abstract In this paper, by using the notion of upsets in residuated lattices and defining the operator Da (X), for an upset X of a residuated lattice L we construct a new topology denoted by τ a and (L, τ a ) becomes a topological space. We obtain some of the topological aspects of these structures such as connectivity and compactness. We study the properties of upsets in residuated lattices and we establish the relationship between them and filters. O. Zahiri and R. A. Borzooei studied upsets in the case of BL-algebras, their results become particular cases of our theory, many of them work in residuated lattices and for that we offer complete proofs. Moreover, we investigate some properties of the quotient topology on residuated lattices and some classes of semitopological residuated lattices. We give the relationship between two types of quotient topologies τ a/F and τ a − $\begin{array}{} \displaystyle \mathop {{\tau _a}}\limits^ - \end{array}$ . Finally, we study the uniform topology τ Λ ¯ $\begin{array}{} \displaystyle {\tau _{\bar \Lambda }} \end{array}$ and we obtain some conditions under which ( L / J , τ Λ ¯ ) $\begin{array}{} \displaystyle (L/J,{\tau _{\bar \Lambda }}) \end{array}$ is a Hausdorff space, a discrete space or a regular space ralative to the uniform topology. We discuss briefly the applications of our results on classes of residuated lattices such as divisible residuated lattices, MV-algebras and involutive residuated lattices and we find that any of this subclasses of residuated lattices with respect to these topologies form semitopological algebras.