IMTL代数是一类重要的非经典逻辑代数,基于IMTL代数的L模糊粗糙集可以刻画信息系统中具有不完备性、模糊性与不可比较性的信息。本文讨论了基于完备IMTL代数的L模糊粗糙集的表示定理,还讨论了此种L模糊粗糙集的上下近似算子的性质以及近似算子的公理化定义方法。
IMTL-algebra is an important non-classical logic algebra. L-fuzzy rough set based on IMTL- algebra can describe the information with incompleteness, fuzziness and uncomparativity in information system. In this paper, we discuss the representation theorems of L-fuzzy rough sets based on IMTL- algebra and the properties and axiomatic approach of the lower and upper approximation operators in L-fuzzy rough sets.