Matematicheskie Zametki
RUS  ENG    JOURNALS   PEOPLE   ORGANISATIONS   CONFERENCES   SEMINARS   VIDEO LIBRARY   PACKAGE AMSBIB  
General information
Latest issue
Forthcoming papers
Archive
Impact factor
Guidelines for authors
License agreement
Submit a manuscript

Search papers
Search references

RSS
Latest issue
Current issues
Archive issues
What is RSS



Mat. Zametki:
Year:
Volume:
Issue:
Page:
Find






Personal entry:
Login:
Password:
Save password
Enter
Forgotten password?
Register


Matematicheskie Zametki, 1978, Volume 23, Issue 1, Pages 67–78 (Mi mzm8120)  

This article is cited in 14 scientific papers (total in 14 papers)

Precise inequalities for norms of functions, third partial, second mixed, or directional derivatives

V. N. Konovalov

Mathematics Institute, Academy of Sciences of the Ukrainian SSR
Abstract: For functions $f$ which are bounded throughout the plane $R^2$ together with the partial derivatives $f^{(3,0)}$, $f^{(0,3)}$, inequalities
\begin{gather*} \|f^{(1,1)}\|\le\sqrt[3]3\|f\|^{1/3}\|f^{(3,0)}\|^{1/3}\|f^{(0,3)}\|^{1/3}, \\ \|f_e^{(2)}\|\le\sqrt[3]3\|f\|^{1/3}(\|f^{(3,0)}\|^{1/3}|e_1|+\|f^{(0,3)}\|^{1/3}|e_2|)^2, \end{gather*}
are established, where $\|\cdot\|$ the upper bound on $R^2$ of the absolute values of the corresponding function, andf $f_e^{(2)}$ is the second derivative in the direction of the unit vector $e=(e_1,e_2)$. Functions are exhibited for which these inequalities become equalities.
Received: 29.11.1976
English version:
Mathematical Notes, 1978, Volume 23, Issue 1, Pages 38–44
DOI: https://doi.org/10.1007/BF01104884
Bibliographic databases:
UDC: 517.5
Language: Russian
Citation: V. N. Konovalov, “Precise inequalities for norms of functions, third partial, second mixed, or directional derivatives”, Mat. Zametki, 23:1 (1978), 67–78; Math. Notes, 23:1 (1978), 38–44
Citation in format AMSBIB
\Bibitem{Kon78}
\by V.~N.~Konovalov
\paper Precise inequalities for norms of functions, third partial, second mixed, or directional derivatives
\jour Mat. Zametki
\yr 1978
\vol 23
\issue 1
\pages 67--78
\mathnet{http://mi.mathnet.ru/mzm8120}
\mathscinet{http://mathscinet.ams.org/mathscinet-getitem?mr=480912}
\zmath{https://zbmath.org/?q=an:0403.26008|0379.26008}
\transl
\jour Math. Notes
\yr 1978
\vol 23
\issue 1
\pages 38--44
\crossref{https://doi.org/10.1007/BF01104884}
Linking options:
  • https://www.mathnet.ru/eng/mzm8120
  • https://www.mathnet.ru/eng/mzm/v23/i1/p67
  • This publication is cited in the following 14 articles:
    Citing articles in Google Scholar: Russian citations, English citations
    Related articles in Google Scholar: Russian articles, English articles
    Математические заметки Mathematical Notes
     
      Contact us:
     Terms of Use  Registration to the website  Logotypes © Steklov Mathematical Institute RAS, 2024