| 研究生: |
呂岳樺 Yue-Hwa Liu |
|---|---|
| 論文名稱: |
橢圓形數值域之四階方陣 Elliptic Numerical Range of 4x4 matirces |
| 指導教授: |
高華隆
Hwa-Long Gau |
| 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: | 91 |
| 語文別: | 英文 |
| 論文頁數: | 32 |
| 中文關鍵詞: | 四階方陣 、數值域 |
| 外文關鍵詞: | 4x4 matrices, numerical range |
| 相關次數: | 點閱:12 下載:0 |
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對於橢圓形數值域(Numerical Range)之四階方陣 而言,其C_R(A)可能的情形為兩點及一橢圓或者為兩個橢圓;我們分別就此兩種情形,討論其與四階方陣中的元素及特徵值(Eigenvalues)之間的關係,並且得到兩者共存的條件。接下來,我們對形如(4﹒2)的四階方陣做相同的討論,從而得到更一步的結果。
The aim of this thesis is to provide characterizations of a 4x4 matrix A with
elliptic numerical range. We will express the conditions in terms of the eigenvalues and entries of A. These characterizations will be useful to construct a 4x4 matrix with an elliptic numerical range.
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