Results 21 to 30 of about 943 (215)

Mathematical modeling of the electric field in anisotropic semiconductors during Hall measurements [PDF]

open access: yesИзвестия Саратовского университета. Новая серия: Физика, 2023
Background and Objectives: Modern discrete functional semiconductor devices and structural elements of micro- and nanoelectronics use materials with anisotropy of electrical properties.
Filippov, Vladimir Vladimirovich   +1 more
doaj   +1 more source

Radial Positive Solutions for p-Laplacian Supercritical Neumann Problems

open access: yesBruno Pini Mathematical Analysis Seminar, 2017
This paper deals with existence and multiplicity of positive solutions for a quasilinear problem with Neumann boundary conditions. The problem is set in a ball and admits at least one constant non-zero solution; moreover, it involves a nonlinearity that ...
Francesca Colasuonno, Benedetta Noris
doaj   +1 more source

On a problem of Neumann

open access: yesDiscrete Mathematics, 2019
A conjecture widely attributed to Neumann is that all finite non-desarguesian projective planes contain a Fano subplane. In this note, we show that any finite projective plane of even order which admits an orthogonal polarity contains a Fano subplane. The number of planes of order less than $n$ previously known to contain a Fano subplane was $O(\log n)$
openaire   +3 more sources

Isoperimetric inequalities of the fourth order Neumann eigenvalues

open access: yesJournal of Inequalities and Applications, 2020
In this paper, we obtain some isoperimetric inequalities for the first ( n − 1 ) $(n-1)$ eigenvalues of the fourth order Neumann Laplacian on bounded domains in an n-dimensional Euclidean space. Our result supports strongly the conjecture of Chasman.
Yanlin Deng, Feng Du
doaj   +1 more source

Asymptotic properties of critical points for subcritical Trudinger-Moser functional

open access: yesAdvanced Nonlinear Studies, 2023
On a smooth bounded domain we study the Trudinger-Moser functional Eα(u)≔∫Ω(eαu2−1)dx,u∈H1(Ω){E}_{\alpha }\left(u):= \mathop{\int }\limits_{\Omega }({e}^{\alpha {u}^{2}}-1){\rm{d}}x,\hspace{1.0em}u\in {H}^{1}\left(\Omega ) for α∈(0,2π)\alpha \in \left(0 ...
Hashizume Masato
doaj   +1 more source

Erich Neumann – Der mystische Mensch

open access: yesRecherches Germaniques, 2021
At the beginning of his essay, Erich Neumann, a student and friend of C. G. Jung with whom he maintained regular epistolary ties from 1933 until his death in 1960, immediately specified that his subject is not mysticism (die Mystik), but what is of the ...
Véronique Liard
doaj   +1 more source

S-shaped connected component of positive solutions for second-order discrete Neumann boundary value problems

open access: yesOpen Mathematics, 2020
By using the bifurcation method, we study the existence of an S-shaped connected component in the set of positive solutions for discrete second-order Neumann boundary value problem.
Miao Liangying, Liu Jing, He Zhiqian
doaj   +1 more source

Dirichlet-Neumann and Neumann-Neumann Waveform Relaxation Algorithms for Parabolic Problems

open access: yesETNA, 2013
We present a waveform relaxation version of the Dirichlet-Neumann and Neumann-Neumann methods for parabolic problems. Like the Dirichlet-Neumann method for steady problems, the method is based on a non-overlapping spatial domain decomposition, and the iteration involves subdomain solves with Dirichlet boundary conditions followed by subdomain solves ...
Gander M.J., Kwok F., Mandal B.
openaire   +5 more sources

The Neumann Problem for Hessian Equations [PDF]

open access: yesCommunications in Mathematical Physics, 2019
25 ...
Xinan Ma, Guohuan Qiu
openaire   +3 more sources

Three solutions to a p(x)-Laplacian problem in weighted-variable-exponent Sobolev space

open access: yesAnalele Stiintifice ale Universitatii Ovidius Constanta: Seria Matematica, 2013
In this paper, we verify that a general p(x)-Laplacian Neumann problem has at least three weak solutions, which generalizes the corresponding result of the reference [R. A.
Pan Wen-Wu   +2 more
doaj   +1 more source

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