Computing upper bounds on Friedrichs’ constant

Vejchodský, Tomáš

  • Applications of Mathematics 2012, Publisher: Institute of Mathematics AS CR(Prague), page 278-289

Abstract

top
This contribution shows how to compute upper bounds of the optimal constant in Friedrichs’ and similar inequalities. The approach is based on the method of a p r i o r i - a p o s t e r i o r i i n e q u a l i t i e s [9]. However, this method requires trial and test functions with continuous second derivatives. We show how to avoid this requirement and how to compute the bounds on Friedrichs’ constant using standard finite element methods. This approach is quite general and allows variable coefficients and mixed boundary conditions. We use the computed upper bound on Friedrichs’ constant in a posteriori error estimation to obtain guaranteed error bounds.

How to cite

top

Vejchodský, Tomáš. "Computing upper bounds on Friedrichs’ constant." Applications of Mathematics 2012. Prague: Institute of Mathematics AS CR, 2012. 278-289. <http://eudml.org/doc/287829>.

@inProceedings{Vejchodský2012,
abstract = {This contribution shows how to compute upper bounds of the optimal constant in Friedrichs’ and similar inequalities. The approach is based on the method of $a priori-a posteriori inequalities$ [9]. However, this method requires trial and test functions with continuous second derivatives. We show how to avoid this requirement and how to compute the bounds on Friedrichs’ constant using standard finite element methods. This approach is quite general and allows variable coefficients and mixed boundary conditions. We use the computed upper bound on Friedrichs’ constant in a posteriori error estimation to obtain guaranteed error bounds.},
author = {Vejchodský, Tomáš},
booktitle = {Applications of Mathematics 2012},
keywords = {second-order boundary value problems; a posteriori error estimates; complementary energy; Friedrichs’ inequality; numerical example},
location = {Prague},
pages = {278-289},
publisher = {Institute of Mathematics AS CR},
title = {Computing upper bounds on Friedrichs’ constant},
url = {http://eudml.org/doc/287829},
year = {2012},
}

TY - CLSWK
AU - Vejchodský, Tomáš
TI - Computing upper bounds on Friedrichs’ constant
T2 - Applications of Mathematics 2012
PY - 2012
CY - Prague
PB - Institute of Mathematics AS CR
SP - 278
EP - 289
AB - This contribution shows how to compute upper bounds of the optimal constant in Friedrichs’ and similar inequalities. The approach is based on the method of $a priori-a posteriori inequalities$ [9]. However, this method requires trial and test functions with continuous second derivatives. We show how to avoid this requirement and how to compute the bounds on Friedrichs’ constant using standard finite element methods. This approach is quite general and allows variable coefficients and mixed boundary conditions. We use the computed upper bound on Friedrichs’ constant in a posteriori error estimation to obtain guaranteed error bounds.
KW - second-order boundary value problems; a posteriori error estimates; complementary energy; Friedrichs’ inequality; numerical example
UR - http://eudml.org/doc/287829
ER -

NotesEmbed ?

top

You must be logged in to post comments.

To embed these notes on your page include the following JavaScript code on your page where you want the notes to appear.

Only the controls for the widget will be shown in your chosen language. Notes will be shown in their authored language.

Tells the widget how many notes to show per page. You can cycle through additional notes using the next and previous controls.

    
                

Note: Best practice suggests putting the JavaScript code just before the closing </body> tag.