Results 21 to 30 of about 9,739,525 (175)

The maximum number of $P_\ell$ copies in $P_k$-free graphs [PDF]

Discrete Mathematics & Theoretical Computer Science, 2019
Generalizing Tur\'an's classical extremal problem, Alon and Shikhelman investigated the problem of maximizing the number of $T$ copies in an $H$-free graph, for a pair of graphs $T$ and $H$.
Ervin Győri, Nika Salia, Casey Tompkins, Oscar Zamora   +3 more
doaj   +1 more source

Association between Pell and Gregory classification and the difficulty of the extraction of the lower third parties

RGO: Revista Gaúcha de Odontologia, 2021
Lower third molar extraction is a common procedure in Oral and Maxillofacial Surgeons routine. However, even though this procedure is frequent, sometimes its course is unexpected.
Erasmo Freitas de SOUZA JUNIOR, Janielma Azevedo SILVA, José Iago Pereira de BRITO, Eudes Euler de Souza LUCENA, Hecio Henrique Araújo de MORAIS   +4 more
doaj   +1 more source

On Pell and Pell-Lucas Generalized Octonions

, 2021
In this study, we gave a generalization on Pell and Pell-Lucas octonions over the algebra O(a, b, c) where a, b and c are real numbers. For these number sequences, we obtain Binet formulas and gave some wellknown identities such as Catalan’s identity ...
Ümit TOKEŞER, Tuğba MERT, Göksal Bilgici, Zafer ÜNAL
core   +2 more sources

Genealogies. Carícies de pell girada [PDF]

, 2017
La pell girada és un cuir treballat per la part de la carn, des de l'interior. Suau al tacte, endurida a l'arrel. Amb aquesta coartada, l'exposició presenta peces d'alumnes passats i presents de la Facultat de Belles Arts de la Universitat de Barcelona ...
Méndez, Tatiana, Crespí Roig, Aina, Gardés Garnés, Sònia, Moretó Alvarado, Laia, Vernardatis, Andreas, Cases Rodrigo, Irene, Pedescoll, Ester, Universitat de Barcelona. Grup d’Innovació Docent ATESI, Daroca Musté, Clara, Pérez S, José Manuel, Llobregat Vidal, Sara, Camps Martínez, Alícia   +11 more
core   +2 more sources

Some results on one type of graph family with some special number sequences

AKCE International Journal of Graphs and Combinatorics, 2020
In this study, we introduce a new graph family. Then, we calculate eigenvalues of the adjacency and the Laplacian matrix of this graph family. Moreover, we show that the perfect matching number of this graph family equals to special second order ...
Emrullah Kirklar, A. Dilek Maden, Fatih Yilmaz   +2 more
doaj   +1 more source

Markov Triples with Generalized Pell Numbers

Mathematics, 2023
For an integer k≥2, let (Pn(k))n be the k-generalized Pell sequence which starts with 0,…,0,1 (k terms), and each term afterwards is given by Pn(k)=2Pn−1(k)+Pn−2(k)+⋯+Pn−k(k). In this paper, we determine all solutions of the Markov equation x2+y2+z2=3xyz,
Julieth F. Ruiz, Jose L. Herrera, Jhon J. Bravo   +2 more
doaj   +1 more source

Pell and Pell–Lucas numbers as difference of two repdigits

Afrika Matematika, 2023
to appear in Afrika ...
Edjeou, Bilizimbéyé, Faye, Bernadette
openaire   +2 more sources

The complex-type Pell p-numbers [PDF]

Notes on Number Theory and Discrete Mathematics
In this paper, we define the complex-type Pell p-numbers and give the generating matrix of these defined numbers. Then, we produce the combinatorial representation, the generating function, the exponential representation and the sums of the complex-type ...
Yeşim Aküzüm, Hüseyin Aydın, Ömür Deveci   +2 more
doaj   +1 more source

The Complex-Type k-Pell Numbers and Their Applications

Journal of Mathematics, 2023
In this study, a new sequence called the complex-type k-Pell number is defined. Also, we give properties of this sequence such as the generating matrix, the generating function, the combinatorial representations, the exponential representation, the sums,
Yeşim Aküzüm
doaj   +1 more source

Equations with arithmetic functions of Pell numbers [PDF]

, 2014
Here, we prove some diophantine results about the Euler function of Pell numbers and their Pell-Lucas companion sequence. For example, if the Euler function of the nth Pell number Pn or Pell- Lucas companion number Qn is a power of 2, then n is greater ...
Luca, Florian, Stănică, Pantelimon
core   +2 more sources