Ferdinand Joachimsthal 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 ...

. He was born on March 9, 1818, at Goldberg (

Złotoryja Złotoryja (; german: Goldberg, ; Latin: ''Aureus Mons'', ''Aurum'') is a historic town in Lower Silesian Voivodeship in southwestern Poland, the administrative seat of Złotoryja County, and of the smaller Gmina Złotoryja. Having been granted ...

Silesia Silesia (, also , ) is a historical region of Central Europe that lies mostly within Poland, with small parts in the Czech Republic and Germany. Its area is approximately , and the population is estimated at around 8,000,000. Silesia is split ...

and died on April 5, 1861, at Breslau (Wrocław). In the year of his graduation (

Ph.D. A Doctor of Philosophy (PhD, Ph.D., or DPhil; Latin: or ') is the most common degree at the highest academic level awarded following a course of study. PhDs are awarded for programs across the whole breadth of academic fields. Because it is ...

Berlin Berlin ( , ) is the capital and List of cities in Germany by population, largest city of Germany by both area and population. Its 3.7 million inhabitants make it the European Union's List of cities in the European Union by population within ci ...

, 1842) he was appointed teacher at a ''

Realschule ''Realschule'' () is a type of secondary school in Germany, Switzerland and Liechtenstein. It has also existed in Croatia (''realna gimnazija''), the Austrian Empire, the German Empire, Denmark and Norway (''realskole''), Sweden (''realskola''), ...

'' in

, and in 1846 was admitted to the philosophical faculty of the university as '' privatdozent''. In 1856, he was appointed

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 ...

of mathematics at Halle, and in 1858 at Breslau. Joachimsthal, who was

Jewish Jews ( he, יְהוּדִים, , ) or Jewish people are an ethnoreligious group and nation originating from the Israelites Israelite origins and kingdom: "The first act in the long drama of Jewish history is the age of the Israelites""The ...

, contributed essays to '' Crelle's Journal'', 1846, 1850, 1854, 1861, and to Torquem's ''Nouvelles Annales des Mathématiques.'' He is known for ''Joachimsthal's Equation'' and ''Joachimsthal Notation '', both associated with

conic section In mathematics, a conic section, quadratic curve or conic is a curve obtained as the intersection of the surface of a cone with a plane. The three types of conic section are the hyperbola, the parabola, and the ellipse; the circle is a spe ...

References

* People from the Province of Silesia 19th-century German mathematicians Silesian Jews 1818 births 1861 deaths {{germany-mathematician-stub