Heinrich Wilhelm Ewald Jung

Heinrich Wilhelm Ewald Jung (born May 4, 1876 in Essen , † March 12, 1953 in Halle (Saale) ) was a German mathematician . He dealt mainly with geometry and algebraic geometry .

Live and act

Heinrich Jung was born in Essen as the son of a mountain councilor. After attending grammar school in Rinteln , he studied mathematics, physics and chemistry at the Philipps University in Marburg / Lahn and the Friedrich Wilhelms University in Berlin from 1895 to 1899 with Friedrich Schottky , Kurt Hensel , Lazarus Immanuel Fuchs , Hermann Amandus, among others Schwarz , Ferdinand Georg Frobenius and Max Planck . In his dissertation ("On the smallest sphere that encloses a spatial figure," Marburg 1899) at Schottky, he proved Jung's theorem, which was later named after him . In 1902 he completed his habilitation in Marburg and remained there until 1908 as a private lecturer. Then he was a teacher in Hamburg before he became a full professor in Kiel in 1913. After brief military service in the First World War, he became a professor at the University of Dorpat in 1918 and in 1920 successor to Albert Wangerin (1844–1933) at the University of Halle , where he was one of the directors of the mathematical seminar and dean of mathematics and natural sciences until his retirement in 1948 Faculty was active and lectured until 1951. Since 1920 he was a member of the German Academy of Natural Scientists Leopoldina .

Jung developed the general theory of theta functions with his teacher Schottky . But he is best known for his arithmetic theory of algebraic functions in two variables. He summarized his work in this regard in his book "Introduction to the algebraic theory of the functions of two variables". He also applied his theory to algebraic surfaces (summarized in the book "Algebraic surfaces") and dealt with birational transformations in the plane (Cremona transformations). He wrote Jung's theorem (1910) in geometry .

Jung was politically active and in the Weimar Republic was a member of the anti-republican Pan - German Association and of the Stahlhelm, the Association of Frontline Soldiers . During the National Socialist era he became a member of the National Socialist People's Welfare (NSV) , the National Socialist German Lecturer Association (NSDDB) and the National Socialist Old Men Association . In 1945 he joined the CDU .

Fonts

• "Introduction to the algebraic theory of the functions of two variables", Berlin, Akademie Verlag, 1951
• "Algebraic Surfaces", 1925

literature

• Henrik Eberle: The Martin Luther University in the time of National Socialism. Mdv, Halle 2002, ISBN 3-89812-150-X , p. 419
• Ott-Heinrich Keller, Wolfgang Engel: Heinrich Wilhelm Ewald Jung in Wiss. Z. Martin Luther University Halle 4 , Issue 3, 1955, pp. 417-422; Annual report DMV 58 , 1955, pp. 5–10
• Eberhard Knobloch:  Jung, Heinrich. In: New German Biography (NDB). Volume 10, Duncker & Humblot, Berlin 1974, ISBN 3-428-00191-5 , p. 664 f. ( Digitized version ).

Web links

• Literature by and about Heinrich Wilhelm Ewald Jung in the catalog of the German National Library
• Heinrich Wilhelm Ewald Jung
• Entry on Heinrich Wilhelm Ewald Jung in the Catalogus Professorum Halensis
• John J. O'Connor, Edmund F. Robertson :  Heinrich Wilhelm Ewald Jung. In: MacTutor History of Mathematics archive .

Individual evidence

1. ↑ Willy Hänsel: The Rintelner Gymnasium in the mirror of the time 1817-1967 ed. from the Ernestinum high school. Bösendahl, Rinteln 1967, p. 101
2. ↑ Harry Waibel : Servants of many masters. Former Nazi functionaries in the Soviet Zone / GDR. Peter Lang, Frankfurt am Main et al. 2011, ISBN 978-3-631-63542-1 , p. 158.