Results 61 to 70 of about 670 (161)

The Construction of Definitions Through Padovan’s Combinatorial Model: An Investigation With Didactic Engineering in an Initial Education Course for Mathematics Teachers [PDF]

, 2023
Background: Given the oversight of specific topics in the history of mathematics books, this research was motivated by the extensive coverage of the Fibonacci sequence.
Vieira, Renata Passos Machado, Alves, Francisco Regis Vieira, Catarino, Paula, Catarino, Paula Maria Machado Cruz, Vieira, Renata   +4 more
core   +1 more source

Determinants and Inverses of Ppoeplitz and Ppankel matrices

Special Matrices, 2018
In this paper, we consider two kinds of special matrices, which are called Ppoeplitz matrix and Ppankel matrix. The idea of matrix transformation is used to compute the determinants and inverses of the Ppoeplitz matrix and the Ppankel matrix.
Zuo Baishuai, Jiang Zhaolin, Fu Deqian
doaj   +1 more source

Tiling Models for Palindromic and n‐Colored Compositions With 1 s and 3 s

Journal of Mathematics, Volume 2026, Issue 1, 2026.
In this work, we explore compositions of positive integers into parts consisting of 1 and 3 s, highlighting their close connection to the Narayana numbers. We also examine palindromic compositions of this type and introduce arithmetic functions that reflect their structural properties.
Orhan Dişkaya, Bahar Kuloğlu, Hayrullah Özimamoğlu, Ahmet Kaya, Hamza Menken, Smritijit Sen   +5 more
wiley   +1 more source

Quadratic Approximation of Generalized Tribonacci Sequences

Discussiones Mathematicae - General Algebra and Applications, 2018
In this paper, we give quadratic approximation of generalized Tribonacci sequence {Vn}n≥0 defined by Vn = rVn−1 + sV n−2 + tV n−3 (n ≥ 3) and use this result to give the matrix form of the n-th power of a companion matrix of {Vn}n≥0. Then we re-prove the
Cerda-Morales Gamaliel
doaj   +1 more source

Spectral Study of Five Major Impact Basins and Their Volcanic Infills on Mercury: A Window Into the Mantle's Properties

Journal of Geophysical Research: Planets, Volume 130, Issue 12, December 2025.
Abstract NASA's MErcury Surface, Space ENvironment, GEochemistry, and Ranging mission has revealed that about 27% of the surface of Mercury is covered by smooth plains, which are mostly volcanic in origin. These plains are mainly located in the northern hemisphere, as well as within and around major impact basins.
E. Caminiti, S. Besse, A. Doressoundiram, J. Wright   +3 more
wiley   +1 more source

The Impact of a Long‐Lived Basal Magma Ocean on the Thermochemical Evolution of Mars

Journal of Geophysical Research: Planets, Volume 130, Issue 11, November 2025.
Abstract A basal magma ocean (BMO) has been suggested to form as a consequence of cumulate overturn following crystallization of an initial global magma ocean. As a consequence of enrichment in iron and heat‐producing elements (HPE), the BMO stabilizes gravitationally at the base of the planetary mantle, affecting the efficiency of mantle convection ...
Kar Wai Cheng, Maxim D. Ballmer, Paul J. Tackley, Amir Khan   +3 more
wiley   +1 more source

A NEW GENERALIZATION OF THE PADOVAN SEQUENCE

, 2022
Integers number sequences in mathematics are one of the subjects with the most ap- plication area. The Fibonacci number sequence has applications in many branches of science such as nature, anatomy, botany, zoology, art, music, analysis, physics, astronomy, chemistry, biology and computers.
Dişkaya, Orhan, Menken, Hamza, Çuvalcıoğlu, Gökhan   +2 more
openaire   +1 more source

... e anca anca. The syntax and se- mantics of a reduplicated adverb in Venetan [PDF]

, 2023
In this paper we explore the syntax and the semantics of the adverbial sequence 'anca anca' used in Venetan varieties. 'Anca anca' is obtained via reduplication of the adverb anca 'also/even' and is interpreted as either 'even more' or 'even less ...
linda badan, andrea padovan
core  

On Doubled and Quadrupled Fibonacci Type Sequences

Annales Mathematicae Silesianae
In this paper we study a family of doubled and quadrupled Fibonacci type sequences obtained by distance generalization of Fibonacci sequence. In particular we obtain doubled Fibonacci sequence, doubled and quadrupled Padovan sequence and quadrupled ...
Yilmaz Nur Şeyma, Włoch Andrzej, Özkan Engin, Strzałka Dominik   +3 more
doaj   +1 more source

Early Life Social Isolation Dysregulates Social Reward Processing, BDNF Signaling, and Intracellular Vesicular Sorting in the Nucleus Accumbens of Male and Female Rats

Journal of Neurochemistry, Volume 169, Issue 8, August 2025.
Early‐life social isolation (ESI) impacts brain development and may increase vulnerability to neuropsychiatric disorders. In this study, brief ESI (PND 14–21) induced sex‐specific, long‐lasting effects on social reward behavior and neuroplasticity in rats.
M. Di Trapano, V. Buzzelli, B. Rizzi, F. Mottarlini, S. Schiavi, R. Ciccocioppo, L. Fattore, P. Romualdi, F. Fumagalli, V. Trezza, L. Caffino, A. Manduca   +11 more
wiley   +1 more source