page_title: Jakob Christmann
section_title: Life
hierarchical_section_title: Jakob Christmann / Life
caption_attribution_description: Italiano: Tractatio geometrica de quadratura circuli, in decem capita distributa. Aduersus errores tam veterum, quam recentiorum mechanicorum. Scripta a M. Iacobo Christmanno .... - Francofurti&#160;: ex officina Paltheniana, sumtibus Petri Kopfij, 1595. - 124 p.&#160;; 4º. - VD 16 C 2449 .
context_page_description: Jakob Christmann was a German Orientalist who also studied problems of astronomy.
context_section_description: Christmann, a Jew who converted before 1578 to Christianity, studied Orientalistics at the University of Heidelberg's Collegium Sapientiae and became teacher at the Dionysianum. He followed humanist Thomas Erastus to Basel and continued his study tour in Breslau, Vienna and Prague.
  In  1578, Pfalzgraf John Casimir founded the Reformed Casmirianum at Neustadt an der Haardt. Christmann joined the Casimirianum faculty in 1582 and dedicated his Arabic language Grammar, Alphabetum arabicum, to his colleagues there.
  After the return of the Reformed faith to the Electorate of the Palatinate, Christmann returned to Heidelberg to serve on the faculty of the Collegium Sapientiae in 1584. After some internal debate about the location of the chair, Christmann was appointed professor of Hebrew at the university in 1585. He compiled a catalog of the manuscripts of Guillaume Postel (1510–1581), located since 1551 at Heidelberg Castle. In 1590 he published a Latin translation of the astronomy of Al-Farghani. In 1609 at the urging of Elector Frederick IV, he was appointed Europe's second professor for the Arabic language.
caption: Tractatio geometrica de quadratura circuli, 1595
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