Zobrazeno 1 - 10
of 50
pro vyhledávání: '"Alfred Michel"'
Autor:
Alfred Michel Grundland
Publikováno v:
Open Communications in Nonlinear Mathematical Physics, Vol Special Issue in Memory of... (2024)
In this paper, we establish a relation between two seemingly unrelated concepts for solving first-order hyperbolic quasilinear systems of partial differential equations in many dimensions. These concepts are based on a variant of the conditional symm
Externí odkaz:
https://doaj.org/article/8e63e269a0024a4194f7c8c462e59163
Autor:
Vasileios G. Papatsiros, Eleni G. Katsogiannou, Georgios I. Papakonstantinou, Alfred Michel, Konstantinos Petrotos, Labrini V. Athanasiou
Publikováno v:
Antioxidants, Vol 11, Iss 3, p 593 (2022)
The aim of this study was to investigate the effects of two commercial phenolic phytogenic feed additives (PFAs) on sows under heat stress conditions of high summer temperatures for seven days before and seven days after the farrowing. The PFA-1 prod
Externí odkaz:
https://doaj.org/article/b29a43b2b65247868e9cb9e4e76fab87
Publikováno v:
Acta Polytechnica, Vol 56, Iss 3, Pp 180-192 (2016)
This paper is devoted to a study of the connections between three different analytic descriptions for the immersion functions of 2D-surfaces corresponding to the following three types of symmetries: gauge symmetries of the linear spectral problem, co
Externí odkaz:
https://doaj.org/article/2af1388edded4979b2568769326383fa
Autor:
Grundland, Alfred Michel
Publikováno v:
Open Communications in Nonlinear Mathematical Physics, Special Issue in Memory of Decio Levi (February 15, 2024) ocnmp:11341
In this paper, we establish a relation between two seemingly unrelated concepts for solving first-order hyperbolic quasilinear systems of partial differential equations in many dimensions. These concepts are based on a variant of the conditional symm
Externí odkaz:
http://arxiv.org/abs/2305.04090
Publikováno v:
J. Phys. A: Math. Theor. 56 345205 (2023)
We investigate the real Lie algebra of first-order differential operators with polynomial coefficients, which is subject to the following requirements. (1) The Lie algebra should admit a basis of differential operators with homogeneous polynomial coe
Externí odkaz:
http://arxiv.org/abs/2304.06458
Publikováno v:
Ann. Henri Poincar\'e 1-26 (2023)
Exceptional orthogonal Hermite and Laguerre polynomials have been linked to the k-step extension of harmonic and singular oscillators. The exceptional polynomials allow the existence of different supercharges from the Darboux-Crum and Krein-Adler con
Externí odkaz:
http://arxiv.org/abs/2211.00327
Publikováno v:
Symmetry, Vol 9, Iss 12, p 318 (2017)
In this paper, a supersymmetric extension of the minimal surface equation is formulated. Based on this formulation, a Lie superalgebra of infinitesimal symmetries of this equation is determined. A classification of the one-dimensional subalgebras is
Externí odkaz:
https://doaj.org/article/aa6cfc7fbf3c4c3ba92abe443ebab68a
This paper is devoted to a study of the connection between the immersion functions of two-dimensional surfaces in Euclidean or hyperbolic spaces and classical orthogonal polynomials. After a brief description of the soliton surfaces approach defined
Externí odkaz:
http://arxiv.org/abs/1912.10899
In this paper, it is shown how a combination of approximate symmetries of a nonlinear wave equation with small dissipations and singularity analysis provides exact analytic solutions. We perform the analysis using the Lie symmetry algebra of this equ
Externí odkaz:
http://arxiv.org/abs/1909.10027
The objective of this paper is to establish a new relationship between the Veronese subsequent analytic solutions of the Euclidean $\mathbb{C}P^{2s}$ sigma model in two dimensions and the orthogonal Krawtchouk polynomials. We show that such solutions
Externí odkaz:
http://arxiv.org/abs/1909.10041