Numerology is any of many systems,
traditions or beliefs in a mystical or esoteric relationship
between numbers and physical objects or living things.
Numerology and numerological divination were popular among
early mathematicians, such as Pythagoras, but are no longer
considered part of mathematics and are regarded as
pseudomathematics by most scientists. This is similar to the
historical development of astronomy out of astrology, and
chemistry from alchemy.
Today, numerology is often associated with the occult,
alongside astrology and similar divinatory arts. The term can
also be used for those who, in the view of some observers,
place excess faith in numerical patterns, even if those people
don't practice traditional numerology. For example, Underwood
Dudley uses the term to discuss practitioners of the Elliott
wave principle of stock market analysis.