Results 11 to 20 of about 92,871 (258)

About One Variational Problem, Leading to а Biharmonic Equation, and about the Approximate Solution of the Main Boundary Value Problem for this Equation

open access: yesНаука и техника, 2022
. Many important questions in the theory of elasticity lead to a variational problem associated with a biharmonic equation and to the corresponding boundary value problems for such an equation.
I. N. Meleshko, P. G. Lasy
doaj   +1 more source

Linear forms in two logarithms and Schneider's method. II [PDF]

open access: yesActa Arithmetica, 1989
Verf. verfeinern ihre in [Acta Arith. 53, No.3, 251-287 (1989; Zbl 0642.10034)] erhaltene untere Abschätzung für \(| b_ 1 \log \alpha_ 1-b_ 2 \log \alpha_ 2| \neq 0\) bei algebraischen \(\alpha_ j\neq 0\) und ganzrationalen \(b_ j\). Dazu kombinieren sie ihre a.a.O. entwickelte Methode mit einer Technik, die sie bereits in [Math. Ann.
Mignotte, Maurice, Waldschmidt, Michel
openaire   +2 more sources

Extremal families of cubic Thue equations [PDF]

open access: yes, 2014
We exactly determine the integral solutions to a previously untreated infinite family of cubic Thue equations of the form $F(x,y)=1$ with at least $5$ such solutions.
Bennett, Michael A., Ghadermarzi, Amir
core   +4 more sources

Larger Corner-Free Sets from Better NOF Exactly-$N$ Protocols

open access: yesDiscrete Analysis, 2021
Larger corner-free sets from better NOF exactly-$N$ protocols, Discrete Analysis 2021:19, 9 pp. If $G$ is an Abelian group, then a _corner_ in $G^2$ is a subset of the form $\{(x,y),(x+d,y),(x,y+d)\}$ with $d\ne 0$.
Nati Linial, Adi Shraibman
doaj   +1 more source

On repdigits as product of $k$-Fibonacci and $k$-Lucas numbers [PDF]

open access: yesMathematica Bohemica
For an integer $k\geq2$, let $(F_n^{(k)})_{n\geq-(k-2)}$, $(L_n^{(k)})_{n \geq-(k-2)}$ be $k$-Fibonacci and $k$-Lucas sequences, respectively. For these sequences the first $k$ terms are $0,\ldots,0,1$ and $0,\ldots,0,2,1$, respectively, and each term ...
Safia Seffah   +2 more
doaj   +1 more source

On $k$-Pell numbers which are sum of two Narayana's cows numbers [PDF]

open access: yesMathematica Bohemica
For any positive integer $k\geq2$, let $(P_n^{(k)})_{n\geq2-k}$ be the $k$-generalized Pell sequence which starts with $0,\cdots,0,1$ ($k$ terms) with the linear recurrence P_n^{(k)} = 2P_{n-1}^{(k)}+P_{n-2}^{(k)}+\cdots+P_{n-k}^{(k)}\quad\text{for} n\
Kouèssi Norbert Adédji   +2 more
doaj   +1 more source

On Terms of Generalized Fibonacci Sequences which are Powers of their Indexes

open access: yesMathematics, 2019
The k-generalized Fibonacci sequence ( F n ( k ) ) n (sometimes also called k-bonacci or k-step Fibonacci sequence), with k ≥ 2 , is defined by the values 0 , 0 , … , 0 , 1 of starting k its terms and such way ...
Pavel Trojovský
doaj   +1 more source

A kit for linear forms in three logarithms

open access: yesMathematics of Computation, 2023
We provide a technique to obtain explicit bounds for problems that can be reduced to linear forms in three complex logarithms of algebraic numbers. This technique can produce bounds significantly better than general results on lower bounds for linear forms in logarithms.
Mignotte, Maurice, Voutier, Paul
openaire   +2 more sources

Tannakian duality for Anderson-Drinfeld motives and algebraic independence of Carlitz logarithms [PDF]

open access: yes, 2007
We develop a theory of Tannakian Galois groups for t-motives and relate this to the theory of Frobenius semilinear difference equations. We show that the transcendence degree of the period matrix associated to a given t-motive is equal to the dimension ...
A. Tamagawa   +31 more
core   +1 more source

Quenched Chiral Perturbation Theory for Heavy-light Mesons [PDF]

open access: yes, 1995
We formulate quenched chiral perturbation theory for heavy-light mesons coupled to pions, and calculate the one-loop chiral logarithmic corrections to $f_B$, $f_{B_{s}}$, $B_B$ and $B_{B_{s}}$. We also calculate these corrections for ``partially quenched'
A. Morel   +15 more
core   +3 more sources

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