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  2. Fibonacci sequence - Wikipedia

    en.wikipedia.org/wiki/Fibonacci_sequence

    The Fibonacci sequence first appears in the book Liber Abaci (The Book of Calculation, ... [79] the flowering of artichoke, the arrangement of a pine cone, ...

  3. Wikipedia:Reference desk/Archives/Mathematics/2024 April 23

    en.wikipedia.org/wiki/Wikipedia:Reference_desk/...

    Schimper appears to have been the first (in 1830) to describe an observed phyllotactic pattern in term of the Fibonacci sequence (to wit, for the rotational angle between leaves in a stem) and his friend Braun described the next year a Fibonacci pattern in pine cones. I found no evidence these gentlemen or any other 19th-century scientists ever ...

  4. Generalizations of Fibonacci numbers - Wikipedia

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

    A Fibonacci sequence of order n is an integer sequence in which each sequence element is the sum of the previous elements (with the exception of the first elements in the sequence). The usual Fibonacci numbers are a Fibonacci sequence of order 2.

  5. Mario Merz - Wikipedia

    en.wikipedia.org/wiki/Mario_Merz

    Many of his installations were accented with words or numbers in neon. The numbers counted off the Fibonacci progression, the mathematical formula (named for the Italian monk and mathematician Leonardo Fibonacci who discovered it) for growth patterns found in many forms of life, including leaves, snail shells, pine cones and reptile skins. [2]

  6. Golden spiral - Wikipedia

    en.wikipedia.org/wiki/Golden_spiral

    A Fibonacci spiral approximates the golden spiral using quarter-circle arcs inscribed in squares derived from the Fibonacci sequence. A golden spiral with initial radius 1 is the locus of points of polar coordinates ( r , θ ) {\displaystyle (r,\theta )} satisfying r = φ 2 θ / π , {\displaystyle r=\varphi ^{2\theta /\pi },} where φ ...

  7. Fibonacci - Wikipedia

    en.wikipedia.org/wiki/Fibonacci

    In the Fibonacci sequence, each number is the sum of the previous two numbers. Fibonacci omitted the "0" and first "1" included today and began the sequence with 1, 2, 3, ... . He carried the calculation up to the thirteenth place, the value 233, though another manuscript carries it to the next place, the value 377.

  8. Pisano period - Wikipedia

    en.wikipedia.org/wiki/Pisano_period

    For any integer n, the sequence of Fibonacci numbers F i taken modulo n is periodic. The Pisano period, denoted π ( n ), is the length of the period of this sequence. For example, the sequence of Fibonacci numbers modulo 3 begins:

  9. Patterns in nature - Wikipedia

    en.wikipedia.org/wiki/Patterns_in_nature

    In 1202, Leonardo Fibonacci introduced the Fibonacci sequence to the western world with his book Liber Abaci. [5] Fibonacci presented a thought experiment on the growth of an idealized rabbit population. [6] Johannes Kepler (1571–1630) pointed out the presence of the Fibonacci sequence in nature, using it to explain the pentagonal form of ...