ABSTRACT

In logic the form of a proposition is the kind or species to which it belongs; a proposition can be, e.g., universal or negative in form. The form is contrasted with the content or matter (cf. ‘subject-matter’), what the proposition is individually about. Form is also relative: ‘All cats are black’ and ‘No dogs are brown’ are of the same form in that both are universal, but of different forms in that only one is negative.