Omitting types algebraically
On algebras of relations
On connections between information systems, rough sets and algebraic logic
In this note we remark upon some relationships between the ideas of an approximation space and rough sets due to Pawlak ([9] and [10]) and algebras related to the study of algebraic logic - namely, cylindric algebras, relation algebras, and Stone algebras. The paper consists of three separate observations. The first deals with the family of approximation spaces induced by the indiscernability relation for different sets of attributes of an information system. In [3] the family of closure operators...
On Equational Classes of Algebraic Versions of Logic I.
On the weak representability of -complete dimension complemented cylindric algebras
One-generated clones of operations on binary relations