Results 21 to 30 of about 235,491 (270)

Parabolic time dependent source identification problem with involution and Neumann condition

open access: yesҚарағанды университетінің хабаршысы. Математика сериясы, 2021
A time dependent source identification problem for parabolic equation with involution and Neumann condition is studied. The well-posedness theorem on the differential equation of the source identification parabolic problem is established.
A. Ashyralyev, A.S. Erdogan
doaj   +1 more source

Sobre la convexidad de la función de presión en el problema de la filtración no lineal

open access: yesRevista de Matemática: Teoría y Aplicaciones, 2009
We prove the convexity of the pressure function v for the isotropic ideal gaz flow, based on the theorem about the zeros of the solution of the parabolic equation (1) Keywords: fluid mechanics, turbulence, parabolic ...
Vladimir N Grebenev
doaj   +1 more source

An approximation scheme for semilinear parabolic PDEs with convex and coercive Hamiltonians [PDF]

open access: yes, 2019
We propose an approximation scheme for a class of semilinear parabolic equations that are convex and coercive in their gradients. Such equations arise often in pricing and portfolio management in incomplete markets and, more broadly, are directly ...
Huang, Shuo   +2 more
core   +2 more sources

Multisector Parabolic Equation Method for Scattering From Impenetrable Objects in Fluid Waveguides

open access: yesIEEE Access, 2021
Parabolic equation methods are a robust and efficient tool for modeling long-range acoustic propagation in range-dependent waveguides. A lesser known, but equally effective, application of parabolic equations is to the scattering problem.
Adith Ramamurti, David C. Calvo
doaj   +1 more source

Rough surface backscatter and statistics via extended parabolic integral equation [PDF]

open access: yes, 2015
This paper extends the parabolic integral equation method, which is very effective for forward scattering from rough surfaces, to include backscatter.
Spivack, Mark, Spivack, Orsola Rath
core   +1 more source

Existence results for a fourth order partial differential equation arising in condensed matter physics [PDF]

open access: yes, 2015
We study a higher order parabolic partial differential equation that arises in the context of condensed matter physics. It is a fourth order semilinear equation whose nonlinearity is the determinant of the Hessian matrix of the solution. We consider this
Escudero, Carlos   +4 more
core   +2 more sources

Parabolic regularization of the gradient catastrophes for the Burgers-Hopf equation and Jordan chain

open access: yes, 2018
Non-standard parabolic regularization of gradient catastrophes for the Burgers-Hopf equation is proposed. It is based on the analysis of all (generic and higher order) gradient catastrophes and their step by step regularization by embedding the Burgers ...
Konopelchenko, B. G., Ortenzi, G.
core   +1 more source

ON APPLYING THE CONTINUOUS OPERATOR METHOD TO SOLVE THE DIRECT PROBLEM FOR NONLINEAR PARABOLIC EQUATIONS

open access: yesИзвестия высших учебных заведений. Поволжский регион: Физико-математические науки, 2020
Background. Parabolic differential equations of mathematical physics play very important role in mathematical modeling of the wide range of phenomena in physical and technical sciences.
I. V. Boykov, V. A. Ryazantsev
doaj   +1 more source

On the Evolution Equation for Magnetic Geodesics

open access: yes, 2009
In this paper we prove the existence of long time solutions for the parabolic equation for closed magnetic geodesics.Comment: In this paper we prove the existence of long time solutions for the parabolic equation for closed magnetic ...
A. Bahri   +20 more
core   +4 more sources

Propagating parabolic rotational beams, new family of accelerated beams [PDF]

open access: yesEPJ Web of Conferences
A novel class of structured propagating waves with parabolic rotational symmetry is introduced for the first time. These are described by exact solutions of the non-paraxial Helmholtz equation.
Espíndola-Ramos Ernesto   +3 more
doaj   +1 more source

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