Mannoury, Gerrit

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Mannoury, Gerrit Gender: M
born on 17 May 1867 at 12:00 (= 12:00 noon )
Place Wormerveer, Netherlands, 52n29, 4e48
Timezone LMT m4e48 (is local mean time)
Data source
BC/BR in hand
Rodden Rating AA
Collector: Astrodienst
Astrology data s_su.18.gif s_taucol.18.gif 26°04' s_mo.18.gif s_scocol.18.gif 13°52 Asc.s_vircol.18.gif 05°29'

Gerrit Mannoury


Dutch autodidact mathematician, philosopher and social activist.

His father Gerrit Mannoury (1825/6, Wormerveer - 11 October 1868) was a sea captain, who died in China, when he was one years old. The message reached his mother Anna van Beek (1834) around 2 December 1868. His brother Jan (4 June 1859, Wornerveer - 29 March 1895, Bussum) became a playwright.

After finishing the higher civil school (HBS , 1885) and the teachers academy "Kweekschool" (with a grant), he started as a teacher, but had to quit because of problems with keeping order in the class (1886). In the following years he studied as a visitor at the University of Amsterdam (UvA) to become a teacher of mathematics, accounting, mechanics (1902) and became a skilled educator, teaching mathematics privately and at schools.

His skills in the field of topology (Lois cyclomatiques, 1897) were noticed by the mathematician Diederik Korteweg, who gave him private lessons and also granted him to give private lessons at the UvA (1903). From 1917 till 1937 he was probably the only professor in mathematics at the UvA that had not a PhD degree. His major student was L. E. J. Brouwer, both became major significs, a Dutch counterpart of the Vienna circle (Wiener Kreis). Other students of Mannoury were the philosopher and logician Evert W. Beth, the (chess) psychologist Adriaan de Groot and the mathematician David van Dantzig.

The Wikipedia said about his work : Mannoury's main inspirations were G. W. F. Hegel, G.J.P.J. Bolland and F. H. Bradley. He was also inspired by the work of Friedrich Nietzsche, Baruch Spinoza, the French mathematician philosopher of science Henri Poincaré and the English positivism of Bertrand Russell. Mannoury combined a logical-mathematical way of thinking with a deep insight into the human soul.

The English Wikipedia did not mention his association with Lady Welby (27 April 1837 - 29 March 1912), a self-educated English philosopher of language, musician and water-colour artist, who had a major influence on the Dutch Significs.


On 8 Augustus 1907 he married Elizabeth Maria Berkelbach van der Sprenkel (1877, Den Helder) in Amsterdam. They got three daughters and a son named after his brother Jan (26 Aug 1909 14h30 Helmond, BC), who became on 4 July 1947 a PhD jurist publishing about social matters.

Mannoury, having faced the threat of poverty in his youth, became a very socially-involved person. In 1900 he joined the Labour party SDAP. He was one of the founders amd bpoard-members of the Sociaal-Democratische Partij in Nederland (SDP, 1909), the predecessor of the Communist Party in Nederland (CPN, 1918). His criticism on the expulsion of Trotsky, led to his own removal from the Dutch Communist party (Nov 1929). After that he retreated from politics, like the other communist signific, the poet Herman Gorter.

He died 30 January 1956 in Amsterdam.

Link to Wikipedia


  • business associate/partner relationship with Gorter, Herman (born 26 November 1864). Notes: Both communist activists and philosophical significs.
  • (has as) student relationship with Brouwer, Luitzen (born 27 February 1881). Notes: Brouwer granted him (an autodidact) a Honorary University Doctorate


  • Death of Sibling 29 March 1895 in Bussum (Jan Mannoury)
    chart Placidus Equal_H.
  • Work : Published/ Exhibited/ Released 21 January 1903 in Amsterdam (Over de beteekenis der wiskundige logica voor de philosophie)
    chart Placidus Equal_H.
  • Social : Joined group 1909 (Co-founder of the Sociaal-Democratische Partij (SDP))
  • Family : Adopted a child 26 August 1909 at 2:30 PM in Helmond (Jan Mannourry)
    chart Placidus Equal_H.
  • Family : Adopted a child 31 May 1911 in Vlissingen (Elisabeth Maria Mannoury)
    chart Placidus Equal_H.
  • Work : Published/ Exhibited/ Released 8 October 1917 in Amsterdam (Over de sociale betekenis van de wiskundige denkvorm)
    chart Placidus Equal_H.
  • Work : New Job 15 May 1918 in Amsterdam (Professor of mathematics and philosophy)
    chart Placidus Equal_H.
  • Work : Published/ Exhibited/ Released 16 September 1918 in Amsterdam (Meetkunde, werktuigkunde en de wijsbegeerte der wiskunde)
    chart Placidus Equal_H.
  • Social : Left group November 1929 (removal from the Dutch Communist Party)
    chart Placidus Equal_H.
  • Work : Published/ Exhibited/ Released 1934 (Die signifischen Grundlagen der Mathematik ( Erkenntnis (1930-1938) Vol. 4 (1934)))
  • Work : Fired/Laid off/Quit 3 February 1937 in Amsterdam (Last lecture before retirement: De schoonheid der wiskunde als signifisch probleem, 1937)
    chart Placidus Equal_H.
  • Work : Gain social status 16 September 1946 in Amsterdam (Honorary Doctorate , promotor L.E.J. Brouwer)
    chart Placidus Equal_H.

Source Notes

SVI retrieved 17 May 1876 at 12:00 AM (des middags ten twaalf ure) from the online Municipal Archive of Wormerveer.

Mannourij, Gerrit (1867-1956): KNAW

Gerrit Mannoury: BWSA


  • Vocation : Education : Researcher (Professor of philosophy, mathematics and physics.)
  • Vocation : Education : Teacher (mathematics, accounting, mechanics, philosophy)
  • Vocation : Education : Other Education (autodidact)
  • Vocation : Occult Fields : Other Occult Fields (Significs)
  • Vocation : Politics : Activist/ social
  • Vocation : Science : Mathematics/ Statistics