On the validity of Friedrichs’ inequalities
Křížek, M. & Neittaanmäki, P. (1984). On the validity of Friedrichs’ inequalities. Mathematica Scandinavica 54, 17-26. Retrieved from http://www.mscand.dk/article/view/12037/10053
Published in
Mathematica ScandinavicaDate
1984Copyright
© Mathematica Scandinavica, 1984.
A standard proof of Friedrich's second inequality is based on contradiction
argumentation. In this paper a direct proof is presented. Moreover, necessary
and sufficient conditions for the validity of Friedrichs' first and second
inequality are given for plane domains.
Publisher
DENMARK Societates MathematicaeISSN Search the Publication Forum
0025-5521