Results 11 to 20 of about 47 (46)

Uniquely clean 2 × 2 invertible integral matrices [PDF]

, 2017
While units in any unital ring are strongly clean by definition, which units are uniquely clean, is a far from being simple question, even in particular rings. In this paper, the question is solved for 2 × 2 integral matrices.
CĂLUGĂREANU , Grigore, ANDRICA, Dorin
core   +2 more sources

A Note on the Particular Set with Size Three [PDF]

, 2016
For a fixed integer k, a Pk  – set is defined as a set of n positive integers { x1, x2, x3,..., xn} with the property that xi, xj + k is a perfect square, whenever i ≠ j .
Özer, Özen
core   +1 more source

Pheosiopsis seni Wu & Hsu, sp. n. [PDF]

, 2016
<i>Pheosiopsis seni</i> Wu & Hsu sp. n. <p>Figs 9, 10, 25, 26, 29, 30, 34, 36</p> <p> <b>Type material.</b> Holotype.
Huang, Chia-Lung, Wang, Li-Hao, Wu, Shipher, Chang, Wei-Chun, Hsu, Yu Feng   +4 more
core   +1 more source

Theta functions, fourth moments of eigenforms and the sup-norm problem II

Forum of Mathematics, Pi
Let f be an $L^2$ -normalized holomorphic newform of weight k on $\Gamma _0(N) \backslash \mathbb {H}$ with N squarefree or, more generally, on any hyperbolic surface $\Gamma \backslash \mathbb {H}$ attached to an Eichler order of ...
Ilya Khayutin, Paul D. Nelson, Raphael S. Steiner   +2 more
doaj   +1 more source

Improvements on dimension growth results and effective Hilbert’s irreducibility theorem

Forum of Mathematics, Sigma
We sharpen and generalize the dimension growth bounds for the number of points of bounded height lying on an irreducible algebraic variety of degree d, over any global field.
Raf Cluckers, Pierre Dèbes, Yotam I. Hendel, Kien Huu Nguyen, Floris Vermeulen   +4 more
doaj   +1 more source

РЕСУРС ТЕПЛОВОЗНЫХ ДИЗЕЛЕЙ: РЕТРОСПЕКТИВНЫЙ АНАЛИЗ [PDF]

, 2014
This is the final part of the review article (for the first part see World of Transport and Transportation, 2014, Vol.12, Iss. 6, pp.212–221) showing that diesel engines of the first post-war II generation were characterized by inherent structural ...
Г. В. Гогричиани, G. V. Gogrichiani, И. В. Сиротенко, I. V. Sirotenko   +3 more
core   +1 more source

On Tribonacci numbers written as a product of three Fibonacci numbers

Analele Stiintifice ale Universitatii Ovidius Constanta: Seria Matematica
The present paper examines the following Diophantine equation: Tn = Fk · Fl · Fm where Tn is the n-th Tribonacci number and likewise Fk is the k-th Fibonacci number and so on as variables.
Ozkaya Zeynep Demirkol
doaj   +1 more source

Integers representable as differences of linear recurrence sequences. [PDF]

Res Number Theory, 2021
Tichy R, Vukusic I, Yang D, Ziegler V.
europepmc   +1 more source

On prime powers in linear recurrence sequences. [PDF]

Ann Math Quebec, 2023
Odjoumani J, Ziegler V.
europepmc   +1 more source

Exact Recursive Calculation of Circulant Permanents: A Band of Different Diagonals inside a Uniform Matrix. [PDF]

Entropy (Basel), 2021
Kocharovsky V, Kocharovsky V, Martyanov V, Tarasov S.   +3 more
europepmc   +1 more source