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  2. Golden ratio - Wikipedia

    en.wikipedia.org/wiki/Golden_ratio

    The ratio of Fibonacci numbers ⁠ ⁠ and ⁠ ⁠, each over ⁠ ⁠ digits, yields over ⁠ ⁠ significant digits of the golden ratio. The decimal expansion of the golden ratio ⁠ φ {\displaystyle \varphi } ⁠ [ 1 ] has been calculated to an accuracy of ten trillion ( ⁠ 1 × 10 13 = 10,000,000,000,000 {\displaystyle \textstyle 1\times ...

  3. Fibonacci coding - Wikipedia

    en.wikipedia.org/wiki/Fibonacci_coding

    To encode an integer N: . Find the largest Fibonacci number equal to or less than N; subtract this number from N, keeping track of the remainder.; If the number subtracted was the i th Fibonacci number F(i), put a 1 in place i − 2 in the code word (counting the left most digit as place 0).

  4. Generalizations of Fibonacci numbers - Wikipedia

    en.wikipedia.org/wiki/Generalizations_of...

    The n-Fibonacci constant is the ratio toward which adjacent -Fibonacci numbers tend; it is also called the n th metallic mean, and it is the only positive root of =. For example, the case of n = 1 {\displaystyle n=1} is 1 + 5 2 {\displaystyle {\frac {1+{\sqrt {5}}}{2}}} , or the golden ratio , and the case of n = 2 {\displaystyle n=2} is 1 + 2 ...

  5. Fibonacci search technique - Wikipedia

    en.wikipedia.org/wiki/Fibonacci_search_technique

    Let k be defined as an element in F, the array of Fibonacci numbers. n = F m is the array size. If n is not a Fibonacci number, let F m be the smallest number in F that is greater than n. The array of Fibonacci numbers is defined where F k+2 = F k+1 + F k, when k ≥ 0, F 1 = 1, and F 0 = 1. To test whether an item is in the list of ordered ...

  6. Non-integer base of numeration - Wikipedia

    en.wikipedia.org/wiki/Non-integer_base_of_numeration

    However, even finite β-expansions are not necessarily unique, for example φ + 1 = φ 2 for β = φ, the golden ratio. A canonical choice for the β -expansion of a given real number can be determined by the following greedy algorithm , essentially due to Rényi (1957) and formulated as given here by Frougny (1992) .

  7. Golden ratio base - Wikipedia

    en.wikipedia.org/wiki/Golden_ratio_base

    Golden ratio base is a non-integer positional numeral system that uses the golden ratio (the irrational number + ≈ 1.61803399 symbolized by the Greek letter φ) as its base. It is sometimes referred to as base-φ , golden mean base , phi-base , or, colloquially, phinary .

  8. Lucas number - Wikipedia

    en.wikipedia.org/wiki/Lucas_number

    Individual numbers in the Lucas sequence are known as Lucas numbers. Lucas numbers and Fibonacci numbers form complementary instances of Lucas sequences . The Lucas sequence has the same recursive relationship as the Fibonacci sequence, where each term is the sum of the two previous terms, but with different starting values. [ 1 ]

  9. Lagged Fibonacci generator - Wikipedia

    en.wikipedia.org/wiki/Lagged_Fibonacci_generator

    The maximum period of lagged Fibonacci generators depends on the binary operation .If addition or subtraction is used, the maximum period is (2 k − 1) × 2 M−1.If multiplication is used, the maximum period is (2 k − 1) × 2 M−3, or 1/4 of period of the additive case.