A number of di?erent instruments for design can be uni?ed in the context of lattice theory towards cross-fertilization By"latticetheory" 1]wemean, equivalently, eitherapartialordering relation 2,3]ora couple of binary algebraic operations 3, 4]. There is a growing interest in computational intelligence based on lattice theory. A number of researchers are currently active developing lattice theory based models and techniques in engineering, computer and information s- ences, applied mathematics, and other scienti?c endeavours. Some of these models and techniques are presented here. However,...