Results 21 to 30 of about 12,719 (235)

Fibonacci Identities via Fibonacci Functions

open access: yes, 2023
We present a differential-calculus-based method which allows one to derive more identities from {\it any} given Fibonacci-Lucas identity containing a finite number of terms and having at least one free index. The method has two {\it independent} components.
openaire   +3 more sources

The complex-type cyclic-Fibonacci sequence and its applications [PDF]

open access: yesJournal of Mahani Mathematical Research, 2023
In the present paper, we aim to generalize the notion of complex-type Fibonacci sequences to complex-type cyclic Fibonacci sequences. Firstly, we define the complex-type cyclic-Fibonacci sequence and then we give miscellaneous  properties of this ...
Ömür Deveci   +2 more
doaj   +1 more source

Counting Maximal Distance-Independent Sets in Grid Graphs

open access: yesDiscussiones Mathematicae Graph Theory, 2013
Previous work on counting maximal independent sets for paths and certain 2-dimensional grids is extended in two directions: 3-dimensional grid graphs are included and, for some/any ℓ ∈ N, maximal distance-ℓ independent (or simply: maximal ℓ-independent ...
Euler Reinhardt   +2 more
doaj   +1 more source

Novel Fibonacci and non-Fibonacci structure in the sunflower: results of a citizen science experiment [PDF]

open access: yesRoyal Society Open Science, 2016
This citizen science study evaluates the occurrence of Fibonacci structure in the spirals of sunflower (Helianthus annuus) seedheads. This phenomenon has competing biomathematical explanations, and our core premise is that observation of both Fibonacci ...
Jonathan Swinton, Erinma Ochu,
doaj   +1 more source

The phyllotaxis of the aortic valve

open access: yesMonaldi Archives for Chest Disease, 2019
Biological systems ubiquitously and inevitably exhibit stochasticity in traits from the molecular level to the multicellular and morphological level.
Marco Moscarelli, Ruggero De Paulis
doaj   +1 more source

Altered Numbers of Fibonacci Number Squared

open access: yesJournal of New Theory, 2023
We investigate two types of altered Fibonacci numbers obtained by adding or subtracting a specific value $\{a\}$ from the square of the $n^{th}$ Fibonacci numbers $G^{(2)}_{F(n)}(a)$ and $H^{(2)}_{F(n)}(a)$.
Emre Kankal, Fikri Köken
doaj   +1 more source

On the Inverse of a Fibonacci Number Modulo a Fibonacci Number Being a Fibonacci Number

open access: yesMediterranean Journal of Mathematics, 2023
Let $(F_n)_{n \geq 1}$ be the sequence of Fibonacci numbers. For all integers $a$ and $b \geq 1$ with $\gcd(a, b) = 1$, let $[a^{-1} \!\bmod b]$ be the multiplicative inverse of $a$ modulo $b$, which we pick in the usual set of representatives $\{0, 1, \dots, b-1\}$. Put also $[a^{-1} \!\bmod b] := \infty$ when $\gcd(a, b) > 1$.
openaire   +3 more sources

There are no multiply-perfect Fibonacci numbers

open access: yes, 2011
Here, we show that no Fibonacci number (larger than 1) divides the sum of its ...
Lewis, Ryan H.   +11 more
core   +1 more source

Editorial: A note on Papal Mathematics [PDF]

open access: yesNotes on Number Theory and Discrete Mathematics
Many recent media claims that Pope Leo XIV, Robert F. Prevost, born in the USA and elected in 2025 in succession to Pope Francis, is the first mathematician to become the Pope of the Catholic Church are questionable. That honour probably belongs to Pope
Anthony G. Shannon
doaj   +1 more source

Fibonacci Modules and Multiple Fibonacci Sequences

open access: yesArs Comb., 2008
Double Fibonacci sequences are introduced and they are related to operations with Fibonacci modules. Generalizations and examples are also discussed.
openaire   +2 more sources

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