- Category : 1822-births
- Type : PE
- Profile : 4/1 - Opportunistic / Investigator
- Definition : Triple Split
- Incarnation Cross : JX Extremes
German mathematician known for his congruence relation ("Zeller's congruence"), which was published in the Société Mathématique de France journal circa 1883.
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, on 31 May 1899 at age in 76 Cannstatt.