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Extensions of vector-valued Baire one functions with preservation of points of continuity

The result's identifiers

  • Result code in IS VaVaI

    <a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F67985840%3A_____%2F16%3A00459546" target="_blank" >RIV/67985840:_____/16:00459546 - isvavai.cz</a>

  • Result on the web

    <a href="http://dx.doi.org/10.1016/j.jmaa.2016.04.052" target="_blank" >http://dx.doi.org/10.1016/j.jmaa.2016.04.052</a>

  • DOI - Digital Object Identifier

    <a href="http://dx.doi.org/10.1016/j.jmaa.2016.04.052" target="_blank" >10.1016/j.jmaa.2016.04.052</a>

Alternative languages

  • Result language

    angličtina

  • Original language name

    Extensions of vector-valued Baire one functions with preservation of points of continuity

  • Original language description

    We prove an extension theorem (with non-tangential limits) for vector-valued Baire one functions. Moreover, at every point where the function is continuous (or bounded), the continuity (or boundedness) is preserved. More precisely: Let H be a closed subset of a metric space X and let Z be a normed vector space. Let ... be a Baire one function. We show that there is a continuous function ... such that, for every ..., the non-tangential limit of g at a equals f(a)f(a) and, moreover, if f is continuous at ... (respectively bounded in a neighborhood of ...) then the extension ... is continuous at a (respectively bounded in a neighborhood of a). We also prove a result on pointwise approximation of vector-valued Baire one functions by a sequence of locally Lipschitz functions that converges “uniformly (or, “continuously) at points where the approximated function is continuous.

  • 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/GA14-07880S" target="_blank" >GA14-07880S: Methods of function theory and Banach algebras in operator theory V.</a><br>

  • Continuities

    I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Others

  • Publication year

    2016

  • Confidentiality

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

Data specific for result type

  • Name of the periodical

    Journal of Mathematical Analysis and Applications

  • ISSN

    0022-247X

  • e-ISSN

  • Volume of the periodical

    442

  • Issue of the periodical within the volume

    1

  • Country of publishing house

    US - UNITED STATES

  • Number of pages

    11

  • Pages from-to

    138-148

  • UT code for WoS article

    000376837100008

  • EID of the result in the Scopus database

    2-s2.0-84964577841