… algebras and sketching the main constructions linking them, and then present semi-Heyting
algebras and introduce semi-Nelson algebras, … new variety of semi-Nelson algebras. In the …

… ) semi-Nelson algebras. In this paper, we enrich the language of (pre) semi-Nelson algebras
by adding a very true operator to get algebras named very true (pre) semiNelson algebras …

… semi-Heyting algebras and dually hemimorphic semi-Nelson algebras. In particular, we …
algebras is equivalent to the category of dually hemimorphic centered semi-Nelson algebras. In …

… The variety of semi-Nelson algebras is introduced in [17] so that … algebras extends to
semi-Heyting and semi-Nelson algebras. It is also proved that the variety of semi-Nelson algebras is …

… Cignoli that relates Heyting algebras and centered Nelson algebras, in this paper we
prove that there exists an equivalence between the category of semi-Heyting algebras and …

… semi-Nelson algebras. The objects in this category are pairs consisting of a semi-Heyting
algebra … The filters must contain all the dense elements of the semi-Heyting algebra and satisfy …

… , defining Nelson, semi-Nelson, Heyting and semi-Heyting algebras. We … of semi Nelson
algebras. The term x →N y = x → (x ∧ y) is quite important for the study of semi-Nelson algebras…

… 2 we review the main results about Nelson algebras and (… 4, we turn our attention to Nelson
algebras and Nelson … -theoretic properties of Nelson algebras arise solely from satisfaction of …

… The term x →N y = x → (x ∧ y) is quite important for the study of semi-Nelson algebras.
There can be many semi-Nelson implication operations defined over the same underlying …

… of Gautama algebras, called “Almost Gautama algebras (AG, … irreducible Almost Gautama
algebras. As consequences, … of algebras called “Almost Gautama Heyting algebras” (AGH, …