that part of modern formal or symbolic logic which systematically exhibits the logical relations between sentences that hold purely in virtue of the ... [2 related articles] Found on http://www.britannica.com/eb/a-z/p/107
functional calculusnoun a system of symbolic logic that represents individuals and predicates and quantification over individuals (as well as the relations between propositions) Found on https://www.encyclo.co.uk/local/20974