system of rules,
system instrumentality that combines interrelated interacting artifacts designed to work as a coherent entity; "he bought a new stereo system"; "the system consists of a motor and a small computer"
aristotelian logic the syllogistic logic of Aristotle as developed by Boethius in the Middle Ages
formal logic,
mathematical logic,
symbolic logic any logical system that abstracts the form of statements away from their content in order to establish abstract criteria of consistency and validity
