(logic) A formal deductive system able to represent the distinction between intension and extension of a term.

(logic) A subfield of logic and mathematics consisting of both the mathematical study of logic and the application of this study to other areas of mathematics, exemplified by questions on the expressive power of formal logics and the deductive power of formal proof systems.

(logic) A formal system.

(logic) Mathematical logic. / (logic) A particular logical calculus.

(logic) A formal system.

A form of symbolic logic used to reason about properties of statements related to order and duration.

(logic) The study of obligation, permission, and related concepts. / (logic) A formal system capturing the concepts of obligation and permission.

(logic) Any formal system that attempts to deal with modalities, such as possibility and necessity, but also obligation and permission.

plural of logistic function

A person who makes confusing or specious arguments, especially arguments involving equivocation.