Results 1 to 10 of about 2,970 (119)

The quasilinear parabolic kirchhoff equation

open access: yesOpen Mathematics, 2017
In this paper the existence of solution of a quasilinear generalized Kirchhoff equation with initial – boundary conditions of Dirichlet type will be studied using the Leray – Schauder principle.
Dawidowski Łukasz
doaj   +2 more sources

Well-posedness and global attractor of Kirchhoff equation with memory term and thermal effect

open access: yesResults in Applied Mathematics, 2023
The Kirchhoff model is derived from the vibration problem of stretchable strings. In this paper, the Kirchhoff equation with thermal effects and memory terms is studied.
Penghui Lv, Guoguang Lin, Xiaojun Lv
doaj   +1 more source

Accuracy of the Kirchhoff-approximation and Kirchhoff-ray-mode fish swimbladder acoustic scattering models. [PDF]

open access: yesPLoS ONE, 2013
The acoustic backscatter from pressure release prolate spheroids and a three-dimensional representation of a fish swimbladder (Chilean jack mackerel, Trachurus symmetricus murphyi) was calculated using four target strength models (Kirchhoff-approximation,
Gavin J Macaulay   +4 more
doaj   +1 more source

Addressing nonlinear transient diffusion in porous media through transformations

open access: yesOil & Gas Science and Technology, 2021
The nonlinear differential equation describing flow of a constant compressibility liquid in a porous medium is examined in terms of the Kirchhoff and Cole-Hopf transformations.
Raghavan Rajagopal, Chen Chih
doaj   +1 more source

Multiple positive solutions for a class of Kirchhoff type equations with indefinite nonlinearities

open access: yesAdvances in Nonlinear Analysis, 2021
We study the following Kirchhoff type equation:
Che Guofeng, Wu Tsung-fang
doaj   +1 more source

Existence of least energy sign-changing solutions to Kirchhoff equation with critical growth

open access: yesJournal of Hebei University of Science and Technology, 2020
In order to deeply study the characteristics of Kirchhoff equation, the existence result of the least energy sign-changing solutions to Kirchhoff equation with Hartree term and critical growth nonlinear term was discussed.
Wenguo LIANG, Yongyan HUANG
doaj   +1 more source

Comparison of the Wiener and Kirchhoff Indices of Random Pentachains

open access: yesJournal of Mathematics, 2021
Let G be a connected (molecule) graph. The Wiener index WG and Kirchhoff index KfG of G are defined as the sum of distances and the resistance distances between all unordered pairs of vertices in G, respectively.
Shouliu Wei   +3 more
doaj   +1 more source

Existence of ground state for fractional Kirchhoff equation with L 2 $L^{2}$ critical exponents

open access: yesBoundary Value Problems, 2020
In this paper, we consider a class of fractional Kirchhoff equations with L 2 $L^{2}$ critical exponents. By using the scaling technique and concentration-compactness principle we obtain the existence and nonexistence of ground state for fractional ...
Yaling Han, Yimin Zhang
doaj   +1 more source

Multiplicity and Concentration of Solutions for Kirchhoff Equations with Magnetic Field

open access: yesAdvanced Nonlinear Studies, 2021
In this paper, we study the following nonlinear magnetic Kirchhoff equation:
Ji Chao, Rădulescu Vicenţiu D.
doaj   +1 more source

Fréchet Differentiability for a Damped Kirchhoff-Type Equation and Its Application to Bilinear Minimax Optimal Control Problems

open access: yesInternational Journal of Differential Equations, 2019
We consider a damped Kirchhoff-type equation with Dirichlet boundary conditions. The objective is to show the Fréchet differentiability of a nonlinear solution map from a bilinear control input to the solution of a Kirchhoff-type equation.
Jin-soo Hwang
doaj   +1 more source

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