Residuated Skew Lattice with a Operation

In this paper, we define hedge operation on a residuated skew lattice and investigate some its properties. We get relationships between some special sets as dense, nilpotent, idempotent, regular elements sets and their hedges.  By examples, we show that hedge of a dense element is not a dense and hedge of a regular element is not a regular. Also hedge of a nilpotent element is a nilpotent and hedge of an idempotent element is not an idempotent and we show that hedge of an idempotent element is idempotent under a condition. We show that the composition of two hedges is a hedge under a condition. By examples, we show that there is no relation between the product of the hedges and the hedge of the products. H(x) is defined and some its properties are proved and is shown that hedge of set H is equal to the H itself. The relationship between H and dense, regular, nilpotent and idempotent elements is investigated too.