Results 81 to 90 of about 3,045 (188)

(H)ALPing the 511 keV line: A thermal DM interpretation of the 511 keV emission

open access: yesPhysics Letters B
We propose a novel framework where MeV-scale Dirac Dark Matter annihilates into axion-like particles, providing a natural explanation for the 511 keV gamma-ray line observed in the Galactic Center. The relic abundance is determined by p-wave annihilation
Mohammad Aghaie   +5 more
doaj   +1 more source

The Polytopic-k-Step Fibonacci Sequences in Finite Groups

open access: yesDiscrete Dynamics in Nature and Society, 2011
We study the polytopic-k-step Fibonacci sequences, the polytopic-k-step Fibonacci sequences modulo m, and the polytopic-k-step Fibonacci sequences in finite groups.
Ömür Deveci
doaj   +1 more source

Bernoulli F-polynomials and Fibo–Bernoulli matrices

open access: yesAdvances in Difference Equations, 2019
In this article, we define the Euler–Fibonacci numbers, polynomials and their exponential generating function. Several relations are established involving the Bernoulli F-polynomials, the Euler–Fibonacci numbers and the Euler–Fibonacci polynomials. A new
Semra Kuş, Naim Tuglu, Taekyun Kim
doaj   +1 more source

Approximating the Fibonacci Sequence

open access: yesIntegers, 2016
See the abstract in the attached pdf.
Tom Edgar   +2 more
openaire   +3 more sources

Exploring Generalized $2^k$-Fibonacci Sequence: A New Family of the Fibonacci Sequence

open access: yesCommunications in Advanced Mathematical Sciences
The focus of this paper is to study the $2^k$–Fibonacci sequence, which is defined for all integers $2^k$, and its connections with both the Fibonacci and the Fibonacci-Lucas sequences.
Elis Gardel Costa Mesquista   +2 more
doaj   +1 more source

On Fibonacci Functions with Period

open access: yesDiscrete Dynamics in Nature and Society, 2013
A function is said to be a Fibonacci function if for all . In 2012, some properties on the Fibonacci functions were presented. In this paper, for any positive integer , a function is said to be a Fibonacci function with period if for all ; we ...
Banyat Sroysang
doaj   +1 more source

Prefixes of the Fibonacci Word

open access: yesTheoretical Computer Science, 2023
Mignosi, Restivo, and Salemi (1998) proved that for all $ε> 0$ there exists an integer $N$ such that all prefixes of the Fibonacci word of length $\geq N$ contain a suffix of exponent $α^2-ε$, where $α= (1+\sqrt{5})/2$ is the golden ratio. In this note we show how to prove an explicit version of this theorem with tools from automata theory and logic.
openaire   +2 more sources

On integer sequences in cryptography

open access: yesJournal of Mathematical Cryptology
Integer sequences play a pivotal role in cryptography, acting as foundational elements for numerous cryptographic algorithms. This comprehensive investigation examines integer sequences that have significantly impacted the sector in domains such as key ...
Raso Mario, Venturi Daniele
doaj   +1 more source

Power Fibonacci sequences in quadratic integer modulo m [PDF]

open access: yesNotes on Number Theory and Discrete Mathematics
The power Fibonacci sequence in ℤₘ[√δ] is defined as a Fibonacci sequence Fₙ=Fₙ₋₁+Fₙ₋₂ where F₀=1 and F₁=a, such that a∈ℤₘ[√δ] and Fₙ≡aⁿ(mod m), for all n∈ℕ∪{0}. In this paper, we investigated the existence of power Fibonacci sequences in ℤₘ[√δ], and the
Paul Ryan A. Longhas   +3 more
doaj   +1 more source

On the arrowhead-Fibonacci numbers

open access: yesOpen Mathematics, 2016
In this paper, we define the arrowhead-Fibonacci numbers by using the arrowhead matrix of the characteristic polynomial of the k-step Fibonacci sequence and then we give some of their properties.
Gültekin Inci, Deveci Ömür
doaj   +1 more source

Home - About - Disclaimer - Privacy