Programming Language Theory FlashcardWhen a rule is not an axiom, what is it called?Properties 3Hide BooksChapter 2. Inductive definitions ConceptsAxiomRuleProper rule Deckproof techniqueQuestionWhen a rule is not an axiom, what is it called?AnswerProper rule. Previous in FlashcardsWhatNext in Flashcards When do we call an evaluation statement is derivable?