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RESEARCH PRODUCT
On the validity of Friedrichs’ inequalities
Křížek, MichalNeittaanmäki, Pekkasubject
Friedrich's second inequalityFriedrich's first inequalityMathematics::Spectral Theorydescription
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. peerReviewed
| year | journal | country | edition | language |
|---|---|---|---|---|
| 1984-01-01 |