Vocation : Science : Mathematics/ Statistics

Guglielmo Libri Carucci dalla Sommaja (1 January 1803 – 28 September 1869) was an Italian count and mathematician, who became known for his love and subsequent theft of ancient and precious manuscripts. After being appointed the Inspector of Libraries in France, Libri began stealing the books he was responsible for. He fled to England when the theft was discovered, along with 30,000 books and manuscripts inside 18 trunks. In France, he was sentenced to 10 years in jail in absentia; some of the stolen works were returned when he died, but many remained missing.

Georges Cuisenaire (1891–1975), also known as Emile-Georges Cuisenaire, was a Belgian teacher who invented Cuisenaire rods, a mathematics teaching aid.

Robert Lawson Vaught (April 4, 1926 – April 2, 2002) was a mathematical logician and one of the founders of model theory.

Julius August Christoph Zech (24 February 1821 Stuttgart, Germany − 13 July 1864 Berg) was a German astronomer and mathematician.
In 1849, Zech published a table of logarithms; as a result, Zech logarithms for finite fields are named after him.
In 1863, Zech attended the founding meeting of the Astronomische Gesellschaft (German Astronomical Society) and became its Vorstand (chairman). Friedrich Wilhelm Argelander assumed this role upon Zech's death..

George Rushing Kempf (Globe, Arizona, August 12, 1944 – Lawrence, Kansas, July 16, 2002) was a mathematician who worked on algebraic geometry, who proved the Riemann–Kempf singularity theorem, the Kempf–Ness theorem, the Kempf vanishing theorem, and who introduced Kempf varieties.

Julius Christian Johannes Zeller (24 June 1822, Mühlhausen am Neckar – 31 May 1899, Cannstatt) was a German mathematician. He was born to Gottlob Zeller and Christiana Friedrike Moser.Originally trained in mathematics, geography and theology, in 1874 Zeller became Director of the Seminary in Markgröningen and a girls' orphanage. In 1882 he became a member of the Société Mathématique de France. The following year, on 16 March 1883, he delivered a short account of his congruence relation (Zeller's congruence), which was published in the society's journal.
He was later awarded the Order of Friedrich, First Class, and the Ritterkreuz of Württemberg. He retired in 1898, and died in the following summer.

Ludwig Otto Hölder (December 22, 1859 – August 29, 1937) was a German mathematician born in Stuttgart.

Käte Fenchel née Käte Sperling (21 December 1905 – 19 December 1983) was a German-born Jewish mathematician, best known for her work on non-abelian groups.