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(I)-envelopes of closed convex sets in Banach spaces

The result's identifiers

  • Result code in IS VaVaI

    <a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11320%2F07%3A00004255" target="_blank" >RIV/00216208:11320/07:00004255 - isvavai.cz</a>

  • Result on the web

  • DOI - Digital Object Identifier

Alternative languages

  • Result language

    angličtina

  • Original language name

    (I)-envelopes of closed convex sets in Banach spaces

  • Original language description

    We study the notion of (I)-generating introduced by V. Fonf and J. Lindendstrauss and a related notion of (I)-envelope. As a consequence of our results we get an easy proof of the James characterization of weak compactness in Banach spaces with weak* angelic dual unit ball and an easy proof of the James characterization of reflexivity within a large class of spaces. We also show by an example that the general James theorem cannot be proved by this method.

  • Czech name

    (I)-obálky uzavřených konvexních množin v Banachových prostorech

  • Czech description

    Studujeme pojem (I)-generování zavedený V.Fonfem a J.Lindenstraussem a související pojem (I)-obálky. Dostáváme snadný důkaz Jamesovy věty pro prostory s w*-andělskou duální koulí. Na příkladu ukazujeme, že takto nelze snadno dokázat obecnou Jamesovu větu.

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/GA201%2F06%2F0018" target="_blank" >GA201/06/0018: Topological structures in functional analysis</a><br>

  • Continuities

    Z - Vyzkumny zamer (s odkazem do CEZ)

Others

  • Publication year

    2007

  • Confidentiality

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

Data specific for result type

  • Name of the periodical

    Israel Journal of Mathematics

  • ISSN

    0021-2172

  • e-ISSN

  • Volume of the periodical

    162

  • Issue of the periodical within the volume

    1

  • Country of publishing house

    IL - THE STATE OF ISRAEL

  • Number of pages

    25

  • Pages from-to

    157-181

  • UT code for WoS article

  • EID of the result in the Scopus database