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研究生: 姚盈孜
論文名稱: Groebner basis的一個應用:計算index of reducibility
An Application of Groebner Basis: computing the index of reducibility
指導教授: 劉容真
學位類別: 碩士
Master
系所名稱: 數學系
Department of Mathematics
論文出版年: 2009
畢業學年度: 97
語文別: 英文
論文頁數: 38
中文關鍵詞: 計算index of reducibility
論文種類: 學術論文
相關次數: 點閱:162下載:4
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  • 對任意自然數n,令q_n是多項式環Q[x,y,z]中的理想< x^{2n},y^{2n},(xy+z)^n,z^n >。首先,我們找出q_n的一組Groebner basis,再利用這組Groebner basis計算(q_n:m),其中m=< x,y,z >。最後利用index of reducibility和socle dimension的關係給出這個結論:
    N_R(q_n)=<n 若 n is even,
    N_R(q_n)=<2n 若 n is odd。

    Contents 1 Introduction...................................1 2 Preliminaries..................................3 2.1 Index of Reducibility and Socle Dimensions...3 2.2 Groebner Bases...............................7 2.3 A Special Matrix and its Determinant.........9 3 Groebner Bases for the Ideals q_n.............16 4 The Colon Ideals (q_n : m)....................28 4.1 The Case of n Being Even....................28 4.2 The Case of n Being Odd.....................31 References......................................38

    [AM] M.F. Atyiah, and I.G. Macdonald, Introduction to Commutative Algebra, Addison-Wesley, 1969.
    [CLO] David Cox, Jonh Little, and Donal O'Shea, Ideals, Varieties, and Algorithms, Springer-Verge, Heidelberg, Berlin, 1992.
    [L] L.-M. Li, Some Algorithms of Corner-Elements in Monomial Ideals, master thesis, National Taiwan Normal University, 2007.

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