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Displaying 141 – 160 of 17466

A Computer Algebra Application to Determination of Lie Symmetries of Partial Differential Equations

Pulov, Vladimir, Chacarov, Edy, Uzunov, Ivan (2007)

Serdica Journal of Computing

The paper has been presented at the 12th International Conference on Applications of Computer Algebra, Varna, Bulgaria, June, 2006A MATHEMATICA package for finding Lie symmetries of partial differential equations is presented. The package is designed to create and solve the associated determining system of equations, the full set of solutions of which generates the widest permissible local Lie group of point symmetry transformations. Examples illustrating the functionality of the package's tools...

A condition on the potential for the existence of doubly periodic solutions of a semi-linear fourth-order partial differential equation.

Chang, Chen (2000)

Electronic Journal of Differential Equations (EJDE) [electronic only]

A confinement result for axisymmetric fluids

Carlotta Maffei, Carlo Marchioro (2001)

Rendiconti del Seminario Matematico della Università di Padova

A Conjugate Gradient Method and a Multigrid Algorithm for Morley' s Finite Element Approximation of the Biharmonic Equation.

D. Braess, P. Peisker (1986/1987)

Numerische Mathematik

A connection between the stochastic heat equation and fractional Brownian motion, and a simple proof of a result of Talagrand.

Mueller, Carl E., Wu, Zhixin (2009)

Electronic Communications in Probability [electronic only]

A conservative finite difference scheme for static diffusion equation.

Arteaga-Arispe, J., Guevara-Jordan, J.M. (2008)

Divulgaciones Matemáticas

A conservative particle approximation for a boundary advection-diffusion problem

B. Lucquin-Desreux, S. Mas-Gallic (1992)

ESAIM: Mathematical Modelling and Numerical Analysis - Modélisation Mathématique et Analyse Numérique

A construction of a parametrix for an elliptic boundary value problem.

Artino, Ralph A., Barros-Neto, José (1994)

Portugaliae Mathematica

A construction of parametrices of elliptic boundary value problems

Bergamasco, Adalberto P., Petronilho, Gerson (1993)

Portugaliae mathematica

A construction of quasi-modes using coherent states

Thierry Paul, Alejandro Uribe (1993)

Annales de l'I.H.P. Physique théorique

A Construction of Stable Subharmonic Orbits in Monotone Time-periodic Dynamical Systems.

Takác, Peter (1993)

Monatshefte für Mathematik

A Constructive Method for Deriving Finite Elements of Nodal Type.

J.-P. Hennart, J. Jaffre, J.E. Roberts (1988)

Numerische Mathematik

A continuity argument for a semilinear Skyrme model.

Geba, Dan-Andrei, Rajeev, Sarada G. (2010)

Electronic Journal of Differential Equations (EJDE) [electronic only]

A continuity property for the inverse of Mañé's projection

Zdeněk Skalák (1998)

Applications of Mathematics

Let $X$ be a compact subset of a separable Hilbert space $H$ with finite fractal dimension $d_{F} (X)$ , and $P_{0}$ an orthogonal projection in $H$ of rank greater than or equal to $2 d_{F} (X) + 1$ . For every $δ > 0$ , there exists an orthogonal projection $P$ in $H$ of the same rank as $P_{0}$ , which is injective when restricted to $X$ and such that $∥ P - P_{0} ∥ < δ$ . This result follows from Mañé’s paper. Thus the inverse ${(P |_{X})}^{- 1}$ of the restricted mapping ${P |}_{X} X \to P X$ is well defined. It is natural to ask whether there exists a universal modulus of continuity for the inverse of Mañé’s...

A continuity result for a quasilinear elliptic free boundary problem

Abdeslem Lyaghfouri (2020)

Applications of Mathematics

We investigate a two dimensional quasilinear free boundary problem, and show that the free boundary is a union of graphs of continuous functions.

A continuous finite element method with face penalty to approximate Friedrichs' systems

Erik Burman, Alexandre Ern (2007)

ESAIM: Mathematical Modelling and Numerical Analysis

A continuous finite element method to approximate Friedrichs' systems is proposed and analyzed. Stability is achieved by penalizing the jumps across mesh interfaces of the normal derivative of some components of the discrete solution. The convergence analysis leads to optimal convergence rates in the graph norm and suboptimal of order ½ convergence rates in the L2-norm. A variant of the method specialized to Friedrichs' systems associated with elliptic PDE's in mixed form and reducing the number...

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