Hermann Graßmann the Younger
Hermann Ernst Graßmann the Younger (born May 8, 1857 in Stettin , † January 21, 1922 in Gießen ) was a German mathematician.
Graßmann was the son of the mathematician Hermann Graßmann and after graduating from high school in 1875 studied mathematics and natural sciences at the University of Leipzig and the University of Halle at the Marienstifts-Gymnasium in Stettin . After a year of probation at the grammar school in Sangerhausen , he became a teacher at the Latin School of the Francke Foundations in Halle in 1882. After the examination for the higher teaching post (1888) he became senior teacher in 1890. In 1893 he received his doctorate in Halle under Albert Wangerin (application of expansion theory to the general theory of space curves and curved surfaces). In 1899 he completed his habilitation in Halle (screw calculation and zero system) after a positive report by Georg Cantorand gave up his steadfast teaching job to pursue an academic career. In 1903 he became associate professor in Halle and in 1904 associate professor at the University of Giessen . In 1922 he received a personal ordinariate.
He continued his father's theory of expansion (a preliminary form of vector and tensor calculus), applied it to projective geometry and differential geometry and was co-editor of his writings on behalf of the Saxon Academy of Sciences.
In 1904 he became a member of the Leopoldina . He had been married to Margarethe Holste from Stettin since 1906. The marriage remained childless.
Fonts
- Application of expansion theory to the general theory of space curves and curved surfaces, 3 volumes, 1886, 1888, 1893 (Latin secondary school in Halle)
- Point calculation and projective geometry, 3 volumes, 1894, 1896, 1898 (Festschriften or program of the Latin secondary school in Halle)
- Projective geometry of the plane using point calculation, 3 parts, Halle 1909, 1913, 1922 (a third volume was ready for printing, but did not appear)
- Three models of the gyro theory, Halle: Martin Schilling 1903 (for the mathematical model collection of the Schilling company).
Web links
Individual evidence
- ^ Hermann Graßmann the Younger in the Mathematics Genealogy Project (English) . This is part 2.2 of his book of the same name.
- ^ List of members Leopoldina, Hermann Grassmann
- ↑ Model collection University of Göttingen
| personal data | |
|---|---|
| SURNAME | Graßmann, Hermann the Younger |
| ALTERNATIVE NAMES | Graßmann, Hermann Ernst the Younger |
| BRIEF DESCRIPTION | German mathematician |
| DATE OF BIRTH | May 8, 1857 |
| PLACE OF BIRTH | Szczecin |
| DATE OF DEATH | January 21, 1922 |
| Place of death | to water |