Results 31 to 40 of about 5,388,871 (377)

The effect of near-zone preconditioning on electromagnetic integral equations of first and second kind [PDF]

Advances in Radio Science, 2013
The linear equation systems which arise from the discretization of surface integral equations are conveniently solved with iterative methods because of the possibility to employ fast integral methods like the Multilevel Fast Multipole Method.
O. Wiedenmann, T. F. Eibert
doaj   +1 more source

New first integral for twisting type-N vacuum gravitational fields with two non-commuting Killing vectors [PDF]

, 1998
A new first integral for the equations corresponding to twisting type-N vacuum gravitational fields with two non-commuting Killing vectors is introduced.
Chinea F J, Chinea F J, Collinson C D, Debney G C, Ernst F J, F J Chinea, Finley J D III, Finley J D III, Halford W D, Hauser I, Herlt E, Hoenselaers C, Ludwig G, Ludwig G, McIntosh C B G, Stephani H, Stephani H   +16 more
core   +3 more sources

Chandrasekhar quadratic and cubic integral equations via Volterra-Stieltjes quadratic integral equation

Demonstratio Mathematica, 2021
In this work, we study the existence of one and exactly one solution x∈C[0,1]x\in C\left[0,1], for a delay quadratic integral equation of Volterra-Stieltjes type.
El-Sayed Ahmed M. A., Omar Yasmin M. Y.
doaj   +1 more source

A Grassmann integral equation

, 2003
The present study introduces and investigates a new type of equation which is called Grassmann integral equation in analogy to integral equations studied in real analysis. A Grassmann integral equation is an equation which involves Grassmann integrations
Aczél J., Anschuetz R., Argyres A. N., Babbage C., Babbage C., Banerjee P. P., Barnabei M., Barndorff-Nielsen O., Barnes A., Barnes T., Bender C. M., Bender C. M., Bender C. M., Caianiello E. R., Caola M. J., Charret I. C., Cheng R., Dams C., de Dominicis C., de Filippo S., Doetsch G., Dolan S., Dosch H. G., Dosch H. G., Euler R., Falconer K. J., Floreanini R., Frydryszak A., Goldberg H., Hamedani G. G., Hamedani G. G., Hardy G. H., Hardy G. H., Hotelling H., Häußling R., Jacobi C. G. J., K. Scharnhorst, Kainz W., Kapuścik E., Karczmarczuk J., Kerler W., Klauder J. R., Kleinert P., Knyazev A. G., Kotecký R., Laitoch M., Laue G., Lawson J. W., Lovely R. M., Lukacs E., Lukacs E., Lévy P., Malbouisson A. P. C., Marcus M., Marinaro M., Massera J. L., McCarthy P. J., McCarthy P. J., McCarthy P. J., McCarthy P. J., Mehrotra B. M., Nosratinia A., Okopińska A., Patrascioiu A., Pestana D., Pierce W. E., Prokhorov L. V., Prokhorov L. V., Rossberg H.-J., Rossberg H.-J., Scarpetta G., Scharnhorst K., Schladitz K., Schladitz K., Schwerdtfeger H., Teugels J. L., Ullah N., Vivier M.   +77 more
core   +1 more source

On the Integral Equation Arising in the Biological Model After the Power-3 Closure

Современные информационные технологии и IT-образование, 2019
This article is devoted to the nonlinear integral equation arising in the biological model of Ulf Dieckmann and Richard Low. A brief review of the model of foreign authors Individual-based model is made, the meaning and necessity of introducing spatial ...
Serafim R. Gadzhiev, Alexey A. Nikitin
doaj   +1 more source

Legendre wavelets technique for special Initial-Value problem for the quarter plain of heat transfer [PDF]

Mathematics and Computational Sciences, 2020
In this paper we have solved the heat transfer equation by means of the Volterra integral equation and Legendre Wavelets. Since, due to numerical facts, solution of the related partial differential equation is difficult, thus we have applied integral ...
Bahman Babayar-Razlighi, Mehdi Solaimani
doaj   +1 more source

INTEGRATION OF PARTIALLY INTEGRABLE EQUATIONS [PDF]

Waves and Stability in Continuous Media, 2006
12 p, WASCOM XIII (Acireale, 19-25 June 2005)
openaire   +2 more sources

Improved-Accuracy Source Reconstructionon Arbitrary 3-D Surfaces [PDF]

, 2009
This paper presents a novel formulation of the source reconstruction problem on arbitrary three-dimensional (3-D) surfaces based on integral equations. Rigorous boundary integral field identities are employed to enforce that the two unknown currents are ...
Araque Quijano, Javier Leonardo, Vecchi, Giuseppe   +1 more
core   +1 more source

On new evolution of Ri’s result via w-distances and the study on the solution for nonlinear integral equations and fractional differential equations

Advances in Difference Equations, 2018
The aim of this work is to establish a new fixed point theorem for generalized contraction mappings with respect to w-distances in complete metric spaces. An illustrative example is provided to advocate the usability of our results.
Hassen Aydi, Teerawat Wongyat, Wutiphol Sintunavarat   +2 more
doaj   +1 more source

Shear viscosity in $\phi^4$ theory from an extended ladder resummation

, 2000
We study shear viscosity in weakly coupled hot $\phi^4$ theory using the CTP formalism . We show that the viscosity can be obtained as the integral of a three-point function.
A. Hosoya, D. J. Gross, D. N. Zubarev, E. Braaten, E. Braaten, E. Calzetta, E. Wang, G. Baym, H.-Th. Elze, Hou Defu, Hou Defu, J.-P. Blaizot, K.-C. Chou, L. P. Kadanoff, L. V. Keldysh, M. E. Carrington, M. E. Carrington, M. E. Carrington, N. P. Landsman, P. A. Henning, P. C. Martin, R. D. Pisarski, R. Horsley, R. Kobes, R. L. Kobes, R. L. Kobes, R. R. Parwani, S. Jeon, S. Jeon, S. Jeon   +29 more
core   +3 more sources