Results 21 to 30 of about 86,808 (266)

Analysis of the stress-strain state of a radially inhomogeneous transversely isotropic sphere with a fixed side surface

Advanced Engineering Research, 2022
Introduction. The paper considers an axisymmetric problem of elasticity theory for a radially inhomogeneous transversally isotopic nonclosed sphere containing none of the 0 and 𝜋 poles.
N. K. Akhmedov, S. M. Yusubova
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From Fibonacci Sequence to the Golden Ratio

Journal of Mathematics, 2013
We consider the well-known characterization of the Golden ratio as limit of the ratio of consecutive terms of the Fibonacci sequence, and we give an explanation of this property in the framework of the Difference Equations Theory. We show that the Golden
Alberto Fiorenza, Giovanni Vincenzi
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Dispersed white roots in red beetroot influence the accuracy of root identification based on colours for intercropping studies

BMC Plant Biology, 2023
Purpose Beetroot is a model crop for studying root competition in intercropping systems because its red-coloured roots facilitate non-destructive visual discrimination with other root systems of intercropped plants. However, beetroot also has white roots,
Yue Xie, Sindhuja Shanmugam, Hanne Lakkenborg Kristensen   +2 more
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Finding of roots of the matrix transcendental characteristic equation using Lambert W function

Lietuvos Matematikos Rinkinys, 2011
The method of finding roots of the matrix transcendental characteristic equation, corresponding to linear matrix differential equation with delayed argument, is analyzed. The examples of the application of the method are presented.
Irma Ivanovienė, Jonas Rimas
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A note on periodic linear recurrence relations [PDF]

Notes on Number Theory and Discrete Mathematics
We provide an elementary proof of the fact that a sequence defined by a linear recurrence relation with integer coefficients is periodic if and only if all characteristic roots are distinct roots of unity.
József Bukor
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Limits for the characteristic roots of a matrix

Duke Mathematical Journal, 1946
Die Note enthält zwei Ergänzungen zu Teil I und II [Duke Math. J. 13, 387--395 (1947; Zbl 0061.01504); 14, 21--26 (1947; Zbl 0029.33701)]. 1. Sind \(f_1(x), \ldots, f_n(x)\) Polynome, \(A = (a_{\kappa,\lambda})\) eine \((n,n)\)-Matrix, \(f_\nu(A) = (a_{\kappa,\lambda}^{(\nu)})\), \(\displaystyle\sum_{\lambda\ne \kappa} \vert a_{\kappa,\lambda}^{(\nu ...
openaire   +10 more sources

AN ENERGY FUNCTION APPROACH FOR FINDING ROOTS OF CHARACTERISTIC EQUATION [PDF]

ICTACT Journal on Soft Computing, 2011
In this paper, an energy function approach for finding roots of a characteristic equation has been proposed. Finding the roots of a characteristics equation is considered as an optimization problem.
Deepak Mishra, Prem K. Kalra
doaj  

Computing pth roots in extended finite fields of prime characteristic p ≥ 2

Electronics Letters, 2016
Direct computation of pth roots in extended finite fields of characteristic p ≥ 2 is introduced, wherein the reduction polynomial is irreducible and can be even random. Proposed method works in any case of p ≥ 2 and finite field extension. This method is
M. Repka
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STABILITY SYSTEMS VIA HURWITZ POLYNOMIALS

Revista de Matemática: Teoría y Aplicaciones, 2017
To analyze the stability of a linear system of differential equations  ẋ = Ax we can study the location of the roots of the characteristic polynomial pA(t) associated with the matrix A. We present various criteria - algebraic and geometric - that help us
BALTAZAR AGUIRRE HERNÁNDEZ, CARLOS ARTURO LOREDO VILLALOBOS, EDGAR CRISTIAN DÍAZ GONZÁLEZ, ERICK CAMPOS CANTÓN   +3 more
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European Standard Clinical Practice Guideline and EXPeRT Recommendations for the Diagnosis and Management of Gastroenteropancreatic Neuroendocrine Neoplasms in Children and Adolescents

Pediatric Blood &Cancer, EarlyView.
ABSTRACT Pediatric gastroenteropancreatic neuroendocrine neoplasms (GEP‐NENs) are extremely rare and clinically heterogeneous. Management has largely been extrapolated from adult practice. This European Standard Clinical Practice Guideline (ESCP), developed by the EXPeRT network in collaboration with adult NEN experts, provides (adult) evidence ...
Michaela Kuhlen, Calogero Virgone, Antje Redlich, Michael Abele, Ricardo Lopez‐Almaraz, Tal Ben‐Ami, Ewa Bien, Gianni Bisogno, Maja Mazic Cesen, Andrea Ferrari, Malgorzata A. Krawczyk, Yves Reguerre, Dominik T. Schneider, Ines B. Brecht, Charlotte Rigaud, Bilgehan Yalcin, Rainer Claus, Christian Vokuhl, Constantin Lapa, Jörg Fuchs, Segolene Hescot, Thomas Walter, Julien Hadoux, Daniel Orbach   +23 more
wiley   +1 more source