| 研究生: |
王靜萍 |
|---|---|
| 論文名稱: |
熱帶導數與熱帶反導數 Tropical Derivatives and Anti-derivatives |
| 指導教授: | 蔡炎龍 |
| 學位類別: |
碩士
Master |
| 系所名稱: |
理學院 - 應用數學系數學教學碩士在職專班 |
| 論文出版年: | 2013 |
| 畢業學年度: | 101 |
| 語文別: | 中文 |
| 論文頁數: | 27 |
| 中文關鍵詞: | 熱帶導數 、熱帶反導數 、熱帶多項式 |
| 外文關鍵詞: | Tropical Derivatives, Tropical Anti-derivatives, Tropical Polynomials |
| 相關次數: | 點閱:71 下載:9 |
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在這篇論文中,我們定義了熱帶導數和熱帶反導數.當我們對兩個相同的熱帶多項式求導數時,可能會得到不同的函數.為了克服此困難,我們限制在最大係數多項式下才求導數.熱帶導數的定義與古典導數相當不同.特別的是,我們有d/dxan⊙x^(⊙n)= an⊙x⊙n-1.將它線性化,我們得到d/dx[an⊙x^(⊙n)⊕an-1⊙x⊙n-1 ⊕…. a1⊙x⊕a0] = an⊙x⊙n-1 ⊕an-1⊙x⊙n-2⊕…⊕a1.我們將會解釋為什麼使用這種定義.導數對了解熱帶幾何很有幫助,它也引出了一些與古典導數相似的資訊.最後,我們討論如何定義及求熱帶多項式的熱帶反導數
In this thesis, we define the tropical derivatives and anti-derivatives. When we differ-
entiate two identical tropical polynomials, we might get two different functions. In order to overcome the diffculties, we restrict the polynomials to largest coeffcient polynomials to avoid unpredictable results when taking derivatives. The definitiion of the tropical derivatives is quite diffrent from the definition of classical derivatives. In particular, we have d/dxan⊙x^(⊙n)= an⊙x⊙n-1 . To extend it linearly, we obtain d/dx[an⊙x^(⊙n)⊕
a n-1⊙x⊙n-1 ⊕…. a1⊙x⊕a0] = an⊙x⊙n-1 ⊕a n-1⊙x⊙n-2⊕…⊕a1. We will explain why we use this kind of definition. The derivatives are helpful in understanding more about tropical geometry, and it carries out some information similar to classical derivatives. Finally, we discuss how to define and find tropical anti-derivatives for tropical polynomials.
Keywords : Tropical derivatives, tropical anti-derivatives, tropical polynomials.
Abstract i
中文摘要 iii
1 Introduction 1
2 Arithmetic of the Max-plus Semiring 3
2.1 Largest Coe_cient Polynomials . . . . . . . . . . . . .. . . . 7
3 Tropical Derivatives 13
3.1 Di_erentiating the Puiseux Series . . . . . . . . . . . . . . 13
3.2 The De_nition of Tropical Derivatives . . .. . . . . . . . 16
3.3 Properties of the Tropical Derivatives . . . . . . . . . . . 18
3.3.1 Product Rule . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
3.3.2 Chain Rule . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
4 Tropical Anti-derivatives …………………………….22
4.1 Integrating Tropical Polynomials . . . . . . . . . . . . . . . 22
5 Conclusion…………………………………………… 25
Bibliography…………………………………………… 27
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[2] Julian Tay, Tropical Derivatives And Duality. Honor's thesis, Brigham Young University, 2007.
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[4] David Speyer and Bernd Sturmfels, Tropical Mathematics. Math. Mag. 82(3), 2009.
[5] Gen-Wei Huang, Visualization of Tropical Curves. Master's thesis, National Chengchi University, Taipei Taiwan, 2009.
[6] Jurgen Richter-Gebert, Bernd Sturmfels, and Thorsten Theobald. First steps in tropical geometry. Contemp. Math., 377, 2005.