Fibonacci sequence was created by Leonardo Pisano in 1170. Each number in the sequence is the sum of the previous two. The sequence starts with 0 and 1, continuing to 89
Phi is an irrational number that can be expressed as 1.6180339887. It can be defined as the ratio of two stick portions to the overall stick. Phi^2 = phi + 1 equation has two solutions: positive and negative. Phi can be represented as 5^0.5 * 0.5 + 0.5
Fibonacci sequence was invented by Leonardo Bonacci in Middle Ages. Sequence grows exponentially: 0, 1, 2, 3, 5, 8, 13, 21, and so on. Agile teams use Fibonacci up to 89 for task sizing
Ralph Nelson Elliott developed market behavior model in 1930s. Published "The Wave Principle" in 1938, summarized in Financial World in 1939. Theory explains market patterns through collective trader psychology
Lucas numbers are integer sequences named after mathematician François Lucas. Each Lucas number is the sum of its two previous terms. Sequence forms Fibonacci-like structure with ratios approaching golden ratio. Lucas numbers appear in Wythoff array as second row
Universal code encoding positive integers into binary words ending with "11". Each code word is Zeckendorf representation reversed with additional "1". Penultimate bit is most significant, first bit least significant. Leading zeros cannot be omitted