# Sökning: "quasi-norm"

1. ## 1. Singular Integrals and Convolution Sets

Sammanfattning : .... LÄS MER

2. ## 2. Some new results concerning Lorentz sequence spaces and Schur multipliers characterization of some new Banach spaces of infinite matrices

Detta är en avhandling från Luleå : Luleå tekniska universitet

Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Matematik; Mathematics;

Sammanfattning : This Licentiate thesis consists of an introduction and three papers, which deal with some new spaces of infinite matrices and Lorentz sequence spaces.In the introduction we give an overview of the area that serves as a frame for the rest of the thesis. In particular, a short description of Schur multipliers is given. LÄS MER

3. ## 3. Some new results concerning Banach spaces of infinite matrices and Lorentz sequence spaces

Detta är en avhandling från Luleå : Luleå tekniska universitet

Sammanfattning : This PhD thesis consists of an introduction and five papers, Which deal with some new spaces of infinite matrices and Lorentz sequence spaces.In the introduction we give an overview of the area that serves as a frame for the rest of the thesis. In particular, a short description of Schur multipliers is given. LÄS MER

4. ## 4. Sobolev-Type Spaces Properties of Newtonian Functions Based on Quasi-Banach Function Lattices in Metric Spaces

Sammanfattning : This Licentiate Thesis is devoted to the study of summability of the Fourier coefficients for functions from some Lorentz type spaces and contains three papers (papers A - C) together with an introduction, which put these papers into a general frame.Let $\Lambda_p(\omega),\;\; p>0,$ denote the Lorentz spaces equipped with the (quasi) norm$$\|f\|_{\Lambda_p(\omega)}:=\left(\int_0^1\left(f^*(t)\omega(t)\right)^p\frac{dt}{t}\right)^{\frac1p}$$for a function $f$ on [0,1] and with $\omega$ positive and equipped with some additional growth properties. LÄS MER