Background
Mannoury, Gerrlt was born on May 17, 1867 in Wormerveer.
Mannoury, Gerrlt was born on May 17, 1867 in Wormerveer.
Autodidactic education. Courses in Mathematics at the University of Amsterdam.
Member of the Dutch Mathematical Society from 1895. Professor of Mathematics and its Philosophy. University of Amsterdam, 1917-1937.
Honorary doctorate, 1946.
psychiatrist, poet and social reformer Frederik Van Eeden. In 1922 the Signific Circle was founded, aiming at social reform through critique of language. In the 1930s more participants from a wide range of disciplines became involved in signifies; there were contacts with the Vienna Circle and the Unity of Science movement, and the journal Synthese was founded (1936). After ten international signific conferences and the death of Mannoury. the movement evaporated in the 1960s. Signifies can be defined as "the theory of mental associations which underlie human language acts, with the exception of theories of language in a narrower sense’. Long before Austin and Searle developed the theory of speech acts, Mannoury developed his theory of language acts. These include actions of both speaker and hearer on the basis of their mutual expectations. In the performance of a language act, memory, internal experience, perception, volition and emotion of speaker and hearer interact in a complex way. ‘Meaning’ is thus mainly conceived in mental terms; this has been both the strength and the weakness of the theory, which was founded on an obsolete form of association psychology. With respect to the philosophy of mathematics, Mannoury has had a vital influence on L. E. J. Brouwer, the founder of intuitionistic mathematics. In 1903 he introduced symbolic logic into the Netherlands, and in 1927 he formulated a prize question which led Heyting to a first formalization of intuitionistic logic.