This is a miscellaneous collection of unsystematic ideas, observations and fancies related to mathematics that have interested me from time to time.

The Real Circular Constant

Squaring the Circle

Altairian Arithmetic An Alternative Number System

Numerology The Study of Numbers

Digitology The Study of Number Systems

Numeromancy Schemes for Assigning Numbers to Letters

Arithmosophy The Wisdom of Numbers: A Scheme for Assigning Numbers to Ideas