Search for dissertations about: "Schatten-von Neumann"

Found 5 swedish dissertations containing the words Schatten-von Neumann.

  2. 1. Schatten-von Neumann properties of bilinear Hankel forms of higher weights

    Author : Marcus Sundhäll; Göteborgs universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Hankel forms; Schatten-von neumann classes; Bergman spaces; Besov spaces; Transvectants; unitary representations; möbius group; möbius group;

    Abstract : .... READ MORE

  4. 2. Continuity and Positivity Problems in Pseudo-differential Calculus

    Author : Joachim Toft; Matematik (naturvetenskapliga fakulteten); []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; funktionsanalys; fourieranalys; Serier; functional analysis; Fourier analysis; Series; Entropy.; Young s inequality; Twisted convolution; Schatten-von Neumann; Lower bounds; Weyl Calculus; Pseudo-differential Operqator; Continuity; Positivity;

    Abstract : The paper deals with various positivity and continuity questions arising in the Weyl calculus of pseudo-differential operators. Let W be a symplectic vector space. READ MORE

  5. 3. Continuity and compositions of operators with kernels in ultra-test function and ultra-distribution spaces

    Author : Yuanyuan Chen; Joachim Toft; Nenad Teofanov; Linnéuniversitetet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Composition; modulation spaces; positivity; pseudo-differential operators; Schatten-von Neumann operators; twisted convolutions; ultra-distributions; Matematik; Mathematics;

    Abstract : In this thesis we consider continuity and positivity properties of pseudo-differential operators in Gelfand-Shilov and Pilipović spaces, and their distribution spaces. We also investigate composition property of pseudo-differential operators with symbols in quasi-Banach modulation spaces. READ MORE

  6. 4. Contributions to certain problems in paracommutators

    Author : Lizhong Peng; Stockholms universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Hankel operator; Commutator of singular integral operator; Paraproduct; Paracommutator; Besov space; BMO; CMO; Schatten - von Neumann class.;

    Abstract : .... READ MORE

  7. 5. Hankel operators and Plancherel formula

    Author : Genkai Zhang; Stockholms universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES;

    Abstract : We consider the natural unitary action of the group SU(d, 1) on the Hilbert space L2(B,d/j,\), where B is the unit ball of C , dfi\ is the measure K(z, z)~~*+ï dm(z), and K(z, z) the reproducing kernel of the Bergman space on B. For A >—1 and not an integer, a Plancherel formula is proved for this action and, in particular, an explicit formula for the correponding Plancherel measure is found. READ MORE