Book | Chapter
Theory of deductive systems and theory of multiplicities
But, in consideration of the fact that a completely novel type of mathematical analysis had shot up in a mighty theoretical-technical development during the nineteenth century, and because of the need of making clear the still utterly confused logical sense of this analysis, I saw yet a third and highest task for a formal logic or formal theory of science. It is announced, in the title of § 691, as the theory of possible forms of theories or (correlatively) the theory of multiplicities.
Husserl Edmund (1969). Formal and transcendental logic, transl. D. Cairns, Nijhoff, Den Haag.
Husserl Edmund (1969). Theory of deductive systems and theory of multiplicities, in Formal and transcendental logic, Den Haag, Nijhoff, pp. 90-104.