Results 11 to 20 of about 4,581,421 (248)

On a Singular Robin Problem with Convection Terms

open access: yesAdvanced Nonlinear Studies, 2020
In this paper, the existence of smooth positive solutions to a Robin boundary-value problem with non-homogeneous differential operator and reaction given by a nonlinear convection term plus a singular one is established.
Guarnotta Umberto   +2 more
doaj   +2 more sources

Elliptic perturbations for Hammerstein equations with singular nonlinear term [PDF]

open access: yesElectronic Journal of Differential Equations, 2006
We consider a singular elliptic perturbation of a Hammerstein integral equation with singular nonlinear term at the origin. The compactness of the solutions to the perturbed problem and, hence, the existence of a positive solution for the ...
Giuseppe Maria Coclite   +1 more
doaj   +3 more sources

Self-similar singular solution of doubly singular parabolic equation with gradient absorption term

open access: yesJournal of Inequalities and Applications, 2006
We deal with the self-similar singular solution of doubly singular parabolic equation with a gradient absorption term for , and in . By shooting and phase plane methods, we prove that when there exists self-similar singular solution, while there is
Shi Peihu, Wang Mingxin
doaj   +1 more source

Pointwise Gradient Estimates in Multi-dimensional Slow Diffusion Equations with a Singular Quenching Term

open access: yesAdvanced Nonlinear Studies, 2020
We consider the high-dimensional equation ∂t⁡u-Δ⁢um+u-β⁢χ{u>0}=0{\partial_{t}u-\Delta u^{m}+u^{-\beta}{\chi_{\{u>0\}}}=0}, extending the mathematical treatment made in 1992 by B. Kawohl and R. Kersner for the one-dimensional case.
Dao Nguyen Anh   +2 more
doaj   +2 more sources

Concepts May Still Be Objects [PDF]

open access: yesOrganon F, 2023
In his book (2021) Trueman attempts to provide a solution to the problem of the concept horse, which according to Frege’s published writings is an object, not a concept.
Harold Noonan
doaj   +1 more source

Positive solutions for singular (p,q)-Laplacian equations with negative perturbation

open access: yesElectronic Journal of Differential Equations, 2023
We consider a nonlinear Dirichlet problem driven by the  -Laplacian and with a reaction consisting of a singular term plus a negative perturbation. Using regularization of the singular term and truncation and comparison techniques, we show that the ...
Nikolaos S. Papageorgiou   +2 more
doaj   +3 more sources

Stability of singular jump-linear systems with a large state space : a two-time-scale approach [PDF]

open access: yes, 2012
This paper considers singular systems that involve both continuous dynamics and discrete events with the coefficients being modulated by a continuous-time Markov chain. The underlying systems have two distinct characteristics.
Yuan, Chenggui   +3 more
core   +4 more sources

Parametric singular double phase Dirichlet problems

open access: yesAdvances in Nonlinear Analysis, 2023
We consider a parametric (with two parameters μ,λ>0\mu ,\lambda \gt 0) Dirichlet problem driven by the double phase differential operator and a reaction which has the competing effect of a singular term and of a superlinear perturbation.
Bai Yunru   +2 more
doaj   +1 more source

Variational Quantum Singular Value Decomposition [PDF]

open access: yesQuantum, 2021
Singular value decomposition is central to many problems in engineering and scientific fields. Several quantum algorithms have been proposed to determine the singular values and their associated singular vectors of a given matrix.
Xin Wang, Zhixin Song, Youle Wang
doaj   +1 more source

Some recent results on singular p-Laplacian equations

open access: yesDemonstratio Mathematica, 2022
A short account of some recent existence, multiplicity, and uniqueness results for singular p-Laplacian problems either in bounded domains or in the whole space is performed, with a special attention to the case of convective reactions.
Guarnotta Umberto   +2 more
doaj   +1 more source

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