On approximately differentiable functions of two variables

  • László Gehér


Differentiable Function 
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  1. 2.
    R n denotes then-dimensional Euclidean space.Google Scholar
  2. 3.
    L n denotes then-dimensional Lebesgue measure.Google Scholar
  3. 4.
    δ(Q) denotes the diameter ofQ.Google Scholar


  1. [1]
    A. Khintchine, Sur la dérivation asymptotique,Comptes Rendus Acad. Sci. Paris,164 (1917), pp. 142–144.Google Scholar
  2. [2]
    J. Czipszer andL. Gehér, Extension of functions satisfying a Lipschitz condition,Acta Math. Acad. Sci. Hung.,6 (1955), pp. 213–220.CrossRefGoogle Scholar
  3. [3]
    H. Rademacher, Über partielle und totale Differenzierbarkeit. I,Math. Ann.,79 (1919), pp. 340–359.CrossRefGoogle Scholar
  4. [4]
    W. Stepanoff, Sur les conditions de l'existence de la différentielle totale,Rec. Math. Soc. Math. Moscou,32 (1925), pp. 511–526.Google Scholar

Copyright information

© Magyar Tudományos Akadémia 1955

Authors and Affiliations

  • László Gehér
    • 1
  1. 1.Miskolc

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