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A LIPSCHITZ FUNCTION WHICH IS C-infinity ON AE LINE NEED NOT BE GENERICALLY DIFFERENTIABLE

The result's identifiers

  • Result code in IS VaVaI

    <a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11320%2F13%3A10189660" target="_blank" >RIV/00216208:11320/13:10189660 - isvavai.cz</a>

  • Result on the web

    <a href="http://dx.doi.org/10.4064/cm131-1-3" target="_blank" >http://dx.doi.org/10.4064/cm131-1-3</a>

  • DOI - Digital Object Identifier

    <a href="http://dx.doi.org/10.4064/cm131-1-3" target="_blank" >10.4064/cm131-1-3</a>

Alternative languages

  • Result language

    angličtina

  • Original language name

    A LIPSCHITZ FUNCTION WHICH IS C-infinity ON AE LINE NEED NOT BE GENERICALLY DIFFERENTIABLE

  • Original language description

    We construct a Lipschitz function f on X = R-2 such that, for each 0 not equal nu is an element of X, the function f is C-infinity smooth on a.e. line parallel to v and f is Gateaux non-differentiable at all points of X except a first category set. Consequently, the same holds if X (with dim X > 1) is an arbitrary Banach space and "a.e." has any usual "measure sense". This example gives an answer to a natural question concerning the author's recent study of linearly essentially smooth functions (which generalize essentially smooth functions of Borwein and Moors).

  • Czech name

  • Czech description

Classification

  • Type

    J<sub>x</sub> - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)

  • CEP classification

    BA - General mathematics

  • OECD FORD branch

Result continuities

  • Project

    <a href="/en/project/GAP201%2F12%2F0436" target="_blank" >GAP201/12/0436: Theory of Real Functions and Descriptive Set Theory III</a><br>

  • Continuities

    P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Others

  • Publication year

    2013

  • Confidentiality

    S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Data specific for result type

  • Name of the periodical

    Colloquium Mathematicum

  • ISSN

    0010-1354

  • e-ISSN

  • Volume of the periodical

    131

  • Issue of the periodical within the volume

    1

  • Country of publishing house

    PL - POLAND

  • Number of pages

    11

  • Pages from-to

    29-39

  • UT code for WoS article

    000324842500003

  • EID of the result in the Scopus database