Gerrit Mannoury

Gerrit Mannoury (17 May 1867 – 30 January 1956) was a Dutch philosopher and mathematician, professor at the University of Amsterdam and communist, known as the central figure in the signific circle, a Dutch counterpart of the Vienna circle.

Gerrit Mannoury was born on 17 May 1867 in Wormerveer, and died on 30 January 1956 in Amsterdam. On 8 August 1907 he married Elizabeth Maria Berkelbach van der Sprenkel, with whom he had three daughters and a son, Jan Mannoury. His father Gerrit Mannoury, a sea-captain, had died in China when he was three years old. He attended the Hoogere Burger School (HBS) in Amsterdam, where he graduated in 1885. The same year he received a Teacher's Degree in Accounting and in Mechanics. In 1902 he also received a Teacher's Degree in Mathematics. Mannoury was a self-educated mathematician. Because he was a teacher he couldn't attend lessons at the University of Amsterdam. He did receive privat lessons from Diederik Korteweg. He was awarded a PhD in Mathematics late in life, in 1946, with L.E.J. Brouwer as his promotores. He died in Amsterdam.

Mannoury started working in primary education in Amsterdam, Bloemendaal and Helmond. In 1910 he started teaching at the Hoogere Burger School (HBS) at Vlissingen. In 1902 he had been appointed Privatdozent at the University of Amsterdam and in 1917 he was made professor there. He retired in 1937). He lectured on the philosophy of mathematics, and on mechanics, analytics and descriptive and projective geometry.

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