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