Example image of eyePlorer eyePlorer map for 'Extension (semantics)': Comprehension (logic) Intension Linguistics Logic Mathematics Semantics Semiotics Sign (semiotics) Monad Gottlob Frege Truth value Set (mathematics) Function (mathematics) Ordered pair Abstract algebra Forgetful functor Group (mathematics) Axiom of extensionality Set theory Computer science Database Instantiation Logical schema Metaphysics Possible world Arthur Conan Doyle Free logic General semantics Extension Extensional definition Characterization (mathematics) Logic of information Operationalization Semantic loan Vagueness Circumscription (logic) Intensional statement Individual rights Prototype theory Setoid Denotation Formal concept analysis Morphological pattern Connotation Intensional logic Philosophy of information Fallacies of definition Property (philosophy) Definition Categories (Peirce)