Person: Rosanes, Jakob
Jakob Rosanes was a German mathematician and chess master who worked on algebraic geometry and invariant theory.
Mathematical Profile (Excerpt):
 Jakob's education was not quite what one would have expected of someone who would go on to an academic career.
 Rosanes, however, wanted to attend university and between 1858 and 1860 he prepared himself to enter the University of Breslau.
 In addition to Schroeter, Rosanes had been taught by some excellent lecturers at Breslau such as Ferdinand Joachimsthal, Rudolf Lipschitz, O E Meyer, and Paul Bachmann.
 He formed a close friendship with his fellow student Moritz Pasch, who also had Heinrich Schroeter as a thesis advisor and was awarded his doctorate in the same year as Rosanes.
 Following the award of his doctorate, Rosanes went to Berlin to continue his studies.
 There were gaps in both Rosanes' and Max Noether's proofs, and these were not filled until the first years of the 20th century by Guido Castelnuovo.
 Rosanes taught at Breslau for the rest of his life.
 Rosanes wrote on many aspects of algebraic geometry and invariant theory (particularly between 1870 and 1890) which were in fashion at that time.
 Max Born attended Rosanes' course on linear algebra, which introduced him to matrix theory, in the first years of the 20th century.
 Not everyone was an enthusiastic as Born, however, for Rosanes had a mixed reputation as a lecturer.
 Rosanes' rectorial address, however, everyone agreed was inspirational.
 Perhaps Rosanes' main interest outside mathematics was chess.
Born attended Rosanes' course on linear algebra, which introduced him to matrix theory, in the first years of the 20th century.
* Not everyone was an enthusiastic as Born, however, for Rosanes had a mixed reputation as a lecturer.
* Rosanes' rectorial address, however, everyone agreed was inspirational.
* Perhaps Rosanes' main interest outside mathematics was chess.
Born attended Rosanes' course on linear algebra, which introduced him to matrix theory, in the first years of the 20th century.
* Not everyone was an enthusiastic as Born, however, for Rosanes had a mixed reputation as a lecturer.
* Rosanes' rectorial address, however, everyone agreed was inspirational.
* Perhaps Rosanes' main interest outside mathematics was chess.
Born 16 August 1842, Brody, AustriaHungary (now Ukraine). Died 6 January 1922, Breslau, Germany (now Wrocław, Poland).
View full biography at MacTutor
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Origin Ukraine
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 @JJO'Connor
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References
Adapted from other CC BYSA 4.0 Sources:
 O’Connor, John J; Robertson, Edmund F: MacTutor History of Mathematics Archive