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研究生: 李育誠
Yu-cheng Lee
論文名稱: 二階非線性守恆律的整體經典解
Global Classical Solutions for the 2 × 2 Nonlinear Balance Laws
指導教授: 洪盟凱
John M. Hong
口試委員:
學位類別: 碩士
Master
系所名稱: 理學院 - 數學系
Department of Mathematics
畢業學年度: 98
語文別: 英文
論文頁數: 24
中文關鍵詞: 雙曲守恆律非線性守恆律柯西問題整體經典解特徵線法
外文關鍵詞: Nonlinear balance laws, Hyperbolic conservation laws, Characteristic method, Global classical solutions, Cauchy problem
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  • 在這篇論文中,我們討論二階非線性系統守恆律的整體經典解存在性.使用特徵線法和A uniform a priori estimate我們去建立整體經典解的存在條件.


    In this thesis, we consider the Cauchy problem of 2 × 2 nonlinear hyperbolic balance laws whose source terms consist of the integral of unknowns. Such nonlinear balance laws arise in, for instance, the compressible Euler-Poisson equations of gas dynamics in Lagrangian coordinate. We are concerned with the global existence of classical solutions to the Cauchy problem of such differential-integro systems. We extend the results by Ta-tsien Li for quasilinear hyperbolic systems to our nonlinear balance laws. The method in this thesis based on the following three steps: (1) the theory of local classical solutions, (2) uniform a priori estimate, (3) global existence or blow up of classical solutions. We find the transformation so that the 2 × 2 system for the first derivatives of Riemann invariants are de-coupled under this transformation. So, the characteristic method for scalar equations can be applied.

    中文摘要.................................................ⅰ 英文摘要.................................................ⅱ 1. Introduction...........................................2 2. Homogeneous System.....................................4 3. Non-homogeneous System................................10 4. Perturbed p-System with Source Term in Integral Form..13 5. A Uniform a-Priori Estimate...........................15 6. The Construction of h and Q...........................21 References...............................................23

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