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研究生: 古文仁
Wen-Jen Ku
論文名稱: 歐氏空間富式分析的探討
A study of Fourier series in Euclidean spaces
指導教授: 沈俊嚴
口試委員:
學位類別: 博士
Doctor
系所名稱: 理學院 - 數學系
Department of Mathematics
論文出版年: 2016
畢業學年度: 104
語文別: 英文
論文頁數: 67
中文關鍵詞: 傅利葉級數歐氏空間施瓦茨空间哈代-李特爾伍德極大函數奇異積分算子希爾伯特轉換
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  • 在此篇論文裡,我們先探究在不同函數空間上的傅立葉轉換,例如說在L^1空間、在L^p空間1 < p ≤ 2及在Schwartz空間。接下來,我們會利用一些性質和定理去探究Hardy-Littlewood的極大函數,並證明其有weak (1,1)和strong(p,p)" 1 < p≤∞" 的性質。最後,我們將探討奇異積分算子的有界性,我們將專注在Hilbert transform。


    In this thesis, we study various properties of Fourier transform. We first study the Fourier transform on Schwartz classes, and extend to L^p spaces for 1 ≤p≤2. Secondly, we shall focus on the Hardy-Littlewood maximal function, and prove that it is weak (1, 1) and strong(p, p) "for 1 < p≤∞" . At the end, we will discuss one of the most important singular intergrals, the so-called Hilbert transform.

    摘要 iii Abstract vi Introduction vii Contents viii 1. Fourier Series and Intergrals 1 1-1 Fourier coefficients and series 1 1-2 Criteria for pointwise convergence 2 1-3 Fourier series of continuous functions 8 1-4 Convergence in norm 11 1-5 Summability method 11 1-6 The Fourier transform of L1 functions 14 1-7 The Schwartz class and tempered distributions 18 1-8 The Fourier transform on Lp,1 < p ≤ 2 22 2. The Hardy-Littlewood Maximal Function 26 2-1 Approximations of the identity 26 2-2 Weak-type inequalities and almost everywhere convergence 29 2-3 The Marcinkiewicz interpolation theorem 31 2-4 The Hardy-Littlewood maximal function 34 2-5 The dyadic maximal function 38 2-6 The weak (1, 1) inequality for the maximal function 41 3. The Hilbert Transform 45 3-1 The conjugate Poisson kernel 45 3-2 The principle value of 1/x 46 3-3 The theorems of M.Riesz and Kolmogorov 48 3-4 Truncated integrals and pointwise convergence 53 Reference 59

    Fourier Analysis by Javier Duoandikoetxea. Translated and revised dy David Cruz-Uribe, SFO. Graduate Studies in Mathematics. Volume29.

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