As explained on the Quadrivium page, Arithmetic is the study of absolute multitudes.
- Introduction to Classical Arithmetic
This course is intended to serve as a bridge between the practical studies of modern Arithmetic and the philosophical studies of classical Arithmetic. While covering the topics found in modern Arithmetic books, this course introduces students to the Axioms of Arithmetic and the terminology that is required for true classical Arithmetic.
- Classical Arithmetic
This course provides students with an English-language study of the ancient doctrine of Arithmetic, covering the ideas taught by Pythagoras, Nicomachus, Boethius and others.