Galerkin approximations for the linear parabolic equation with the third boundary condition

István Faragó; Sergey Korotov; Pekka Neittaanmäki

Applications of Mathematics (2003)

  • Volume: 48, Issue: 2, page 111-128
  • ISSN: 0862-7940

Abstract

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We solve a linear parabolic equation in d , d 1 , with the third nonhomogeneous boundary condition using the finite element method for discretization in space, and the θ -method for discretization in time. The convergence of both, the semidiscrete approximations and the fully discretized ones, is analysed. The proofs are based on a generalization of the idea of the elliptic projection. The rate of convergence is derived also for variable time step-sizes.

How to cite

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Faragó, István, Korotov, Sergey, and Neittaanmäki, Pekka. "Galerkin approximations for the linear parabolic equation with the third boundary condition." Applications of Mathematics 48.2 (2003): 111-128. <http://eudml.org/doc/33139>.

@article{Faragó2003,
abstract = {We solve a linear parabolic equation in $\mathbb \{R\}^d$, $d \ge 1,$ with the third nonhomogeneous boundary condition using the finite element method for discretization in space, and the $\theta $-method for discretization in time. The convergence of both, the semidiscrete approximations and the fully discretized ones, is analysed. The proofs are based on a generalization of the idea of the elliptic projection. The rate of convergence is derived also for variable time step-sizes.},
author = {Faragó, István, Korotov, Sergey, Neittaanmäki, Pekka},
journal = {Applications of Mathematics},
keywords = {linear parabolic equation; third boundary condition; finite element method; semidiscretization; fully discretized scheme; elliptic projection; finite element method; semidiscretization; fully discretized scheme; elliptic projection},
language = {eng},
number = {2},
pages = {111-128},
publisher = {Institute of Mathematics, Academy of Sciences of the Czech Republic},
title = {Galerkin approximations for the linear parabolic equation with the third boundary condition},
url = {http://eudml.org/doc/33139},
volume = {48},
year = {2003},
}

TY - JOUR
AU - Faragó, István
AU - Korotov, Sergey
AU - Neittaanmäki, Pekka
TI - Galerkin approximations for the linear parabolic equation with the third boundary condition
JO - Applications of Mathematics
PY - 2003
PB - Institute of Mathematics, Academy of Sciences of the Czech Republic
VL - 48
IS - 2
SP - 111
EP - 128
AB - We solve a linear parabolic equation in $\mathbb {R}^d$, $d \ge 1,$ with the third nonhomogeneous boundary condition using the finite element method for discretization in space, and the $\theta $-method for discretization in time. The convergence of both, the semidiscrete approximations and the fully discretized ones, is analysed. The proofs are based on a generalization of the idea of the elliptic projection. The rate of convergence is derived also for variable time step-sizes.
LA - eng
KW - linear parabolic equation; third boundary condition; finite element method; semidiscretization; fully discretized scheme; elliptic projection; finite element method; semidiscretization; fully discretized scheme; elliptic projection
UR - http://eudml.org/doc/33139
ER -

References

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