Results 21 to 30 of about 3,148 (188)

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

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

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

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

Bi-Periodic (p,q)-Fibonacci and Bi-Periodic (p,q)-Lucas Sequences

open access: yesSakarya Üniversitesi Fen Bilimleri Enstitüsü Dergisi, 2023
In this paper, we define bi-periodic (p,q)-Fibonacci and bi-periodic (p,q)-Lucas sequences, which generalize Fibonacci type, Lucas type, bi-periodic Fibonacci type and bi-periodic Lucas type sequences, using recurrence relations of (p,q)-Fibonacci and (p,
Yasemin Taşyurdu   +1 more
doaj   +1 more source

The Fibonacci Dimension of a Graph [PDF]

open access: yesThe Electronic Journal of Combinatorics, 2011
The Fibonacci dimension ${\rm fdim}(G)$ of a graph $G$ is introduced as the smallest integer $f$ such that $G$ admits an isometric embedding into $\Gamma_f$, the $f$-dimensional Fibonacci cube. We give bounds on the Fibonacci dimension of a graph in terms of the isometric and lattice dimension, provide a combinatorial characterization of the Fibonacci
Cabello, Sergio   +2 more
openaire   +4 more sources

Developing competencies in constructing dialogic instructional scenarios for AI tutors among pre-service teachers

open access: yesRUDN Journal of Informatization in Education
Problem statement. Currently, due to the large-scale penetration of modern digital technologies into education, the importance of teachers’ skills related to the design of interactive learning scenarios involving the use of artificial intelligence (AI ...
Ivan A. Stesik, Fedor A. Bulin-Sokolov
doaj   +1 more source

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