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Smoothness and structure of Banach spaces

Project goals

The aimof the project is solving some basic questions on smoothness and structure of Banach spaces. What can be said about the structure of linear and nonlinear quotients of C(K) spaces, in particular the containment of copies of c_0. What is the best order of smoothness of equivalent norms on these spaces. Does an isometric version of the Dvoretzky's theorem hold for spaces whose norm is derived from a polynomial. Is it possible to generate convex polynomials out of nonconvex ones preserving some of the basic properties. What is the best Gateaux smoothness of certain classical spaces.

Keywords

nonlinear functional analysissmoothness and structure of banach spacesrenormings of C(K) spaces

Public support

  • Provider

    Academy of Sciences of the Czech Republic

  • Programme

    Grants of distinctly investigative character focused on the sphere of research pursued at present particularly in the Academy of Sciences of the Czech Republic

  • Call for proposals

    Výzkumné granty 2 (SAV02002-AB)

  • Main participants

    Matematický ústav AV ČR, v. v. i.

  • Contest type

    VS - Public tender

  • Contract ID

Alternative language

  • Project name in Czech

    Hladkost a struktura Banachových prostorů

  • Annotation in Czech

    Cílem projektu je vyřešení některých základních otázek týkajících se hladkosti a struktury Banachových prostorů. Jaká je struktura lineárních a nelineárních kvocientů C(K) prostorů, zejména obsahování kopií c_0. Jaká je nejlepší možná hladkost ekvivalentních norem těchto prostorů. Platí isometrická verze Dvoretzkého věty pro prostory jejichž noorma je odvozena od polynomu? Lze generovat konvexní polynomy z nekonvexních se zachováním některých základních vlastností? Jaká je nejlepší Gateauxova hladkost některých klasických prostorů?

Scientific branches

  • R&D category

    ZV - Basic research

  • CEP classification - main branch

    BA - General mathematics

  • CEP - secondary branch

  • CEP - another secondary branch

  • 10101 - Pure mathematics

Completed project evaluation

  • Provider evaluation

    V - Vynikající výsledky projektu (s mezinárodním významem atd.)

  • Project results evaluation

    C(K) spaces hace infinitely smooth renorming and a partititon of unity whenever they have a dual LUR norm. An optimal quantitative version of the classical Krein's theorem was found. Reflexive spaces were characterized via equivalent renorming condition.

Solution timeline

  • Realization period - beginning

    Jan 1, 2002

  • Realization period - end

    Jan 1, 2004

  • Project status

    U - Finished project

  • Latest support payment

Data delivery to CEP

  • Confidentiality

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

  • Data delivery code

    CEP/2005/AV0/AV05IA/U/N/5:3

  • Data delivery date

    Sep 26, 2007

Finance

  • Total approved costs

    634 thou. CZK

  • Public financial support

    363 thou. CZK

  • Other public sources

    271 thou. CZK

  • Non public and foreign sources

    0 thou. CZK

Basic information

Recognised costs

634 CZK thou.

Public support

363 CZK thou.

57%


Provider

Academy of Sciences of the Czech Republic

CEP

BA - General mathematics

Solution period

01. 01. 2002 - 01. 01. 2004