Elements of Deductive Logic

abstract affirmative angle animal applied become body called cause clauses clear common complete compound concept conclusion conditional consequent consider consists contained contradictory conversion deduction defined definition denied denoted determined difference disjunctive distinct distinguished distributed division equal essential example existence expressed extension fallacy false figure formal four genus gives greater happy hence illicit immediate indicates individual inference intensive involves judgment kinds knowledge laws least less limited logical major premise mark matter means mediate merely metals middle mind minor moods mortal nature negative notion objects observed occurs opposition particular perhaps positive Praxis predicate premise principles proposition proved pure quantity question reasoning reduced reference relation rule simple species statement syllogism taken term things third thought tion true truth universal usually whole