The well-known Arithmancer, Bridget Wenlock, was the first to discover the magical properties of the number seven. Septima Vector is known to have taught Arithmancy at Hogwarts from 1991 to 1996, quite possibly longer.
Arithmancer and Arithmancy come from the Greek αριθμός (arithmos), meaning "number", and μαντεία (manteia), meaning "divination".
|Professors: Septima Vector|
|Known Arithmancers: Bridget Wenlock|
|Textbooks: Numerology and Grammatica · New Theory of Numerology|
|Arithmancy at Hogwarts: Arithmancy (class) · Classroom 7A · Advanced Arithmancy Studies|