Jakob Rosanes (also Jacob; 16 August 1842 – 6 January 1922) was a

German German(s) may refer to: * Germany (of or related to) ** Germania (historical use) * Germans, citizens of Germany, people of German ancestry, or native speakers of the German language ** For citizens of Germany, see also German nationality law **Ge ...

mathematician A mathematician is someone who uses an extensive knowledge of mathematics in their work, typically to solve mathematical problems. Mathematicians are concerned with numbers, data, quantity, structure, space, models, and change. History On ...

who worked on algebraic geometry and

invariant theory Invariant theory is a branch of abstract algebra dealing with actions of groups on algebraic varieties, such as vector spaces, from the point of view of their effect on functions. Classically, the theory dealt with the question of explicit descri ...

. He was also a chess master. Rosanes studied at

University of Berlin Humboldt-Universität zu Berlin (german: Humboldt-Universität zu Berlin, abbreviated HU Berlin) is a German public research university in the central borough of Mitte in Berlin. It was established by Frederick William III on the initiative ...

and the

University of Breslau A university () is an institution of higher (or tertiary) education and research which awards academic degrees in several academic disciplines. Universities typically offer both undergraduate and postgraduate programs. In the United States, th ...

. He obtained his

doctorate A doctorate (from Latin ''docere'', "to teach"), doctor's degree (from Latin ''doctor'', "teacher"), or doctoral degree is an academic degree awarded by universities and some other educational institutions, derived from the ancient formalism ''li ...

from Breslau (

Wrocław Wrocław (; german: Breslau, or . ; Silesian German: ''Brassel'') is a city in southwestern Poland and the largest city in the historical region of Silesia. It lies on the banks of the River Oder in the Silesian Lowlands of Central Europe, rou ...

) in 1865 and taught there for the rest of his working life. He became

professor Professor (commonly abbreviated as Prof.) is an academic rank at universities and other post-secondary education and research institutions in most countries. Literally, ''professor'' derives from Latin as a "person who professes". Professors ...

in 1876 and

rector Rector (Latin for the member of a vessel's crew who steers) may refer to: Style or title *Rector (ecclesiastical), a cleric who functions as an administrative leader in some Christian denominations *Rector (academia), a senior official in an edu ...

of the university during the years 1903–1904.Rosanes, Jacob — Jewish Encyclopedia
/ref> Rosanes made significant contributions in Cremona transformations.

Notable chess games

Jakob Rosanes vs Adolf Anderssen, Breslau 1862, Spanish Game: Berlin Defense. Rio Gambit Accepted (C67), 1-0
Sometimes, Rosanes was able to beat even one of the best masters of his time,

Adolf Anderssen Karl Ernst Adolf Anderssen (July 6, 1818 – March 13, 1879)"Anderssen, Adolf" in ''The New Encyclopædia Britannica''. Chicago: Encyclopædia Britannica Inc., 15th edn., 1992, Vol. 1, p. 385. was a German chess master. He won the great internat ...

...
Jakob Rosanes vs Adolf Anderssen, Breslau, 1863, King's Gambit: Accepted. Kieseritzky Gambit Anderssen Defense (C39), 0-1
...but as shows this beautiful game, the opposite result was probably quite usual in their games.

References

External links

* * 1842 births 1922 deaths People from Brody 19th-century Austrian Jews 19th-century German mathematicians 20th-century German mathematicians 19th-century Polish mathematicians 20th-century Polish mathematicians Jewish scientists Algebraic geometers Jewish chess players Austrian chess players Jews from Galicia (Eastern Europe) 19th-century chess players {{Poland-mathematician-stub