The three major forms of numerology in use today are the Kabbalah, the Chaldean and the Pythagorean. I use aspects of all three when I prepare and interpret charts. The Kabbalah was developed for the Hebrew alphabet, and therefore has only 22 vibrations ranging from 1 to 400. It was adapted for the Greek alphabet, then further adapted for the Roman alphabet. In Chaldean numerology, compound numbers always used.
Single digits represent the outer aspects of a person, while double digits reveal inner influences.
He was most widely known for his proposition that the square of the hypotenuse of a right triangle is equal to the sum of the squares of the other two sides. Pythagoras was as interested in metaphysics and spiritual development as he was in math, so it's no wonder he joined the two disciplines. For example, his students had to memorize everything rather than write it down. This approach is still used for geometry students learning theorems. The right triangle can also be used to symbolize the world of an individual and serves as the original basis for the numerological interpretation of the life pattern of an individual.