Groebner Bases和Corner Elements的應用：計算Colon Ideals
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2013
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Abstract
For every even integer n=2k, let q_n be the ideal<x^{2n},y^{2n},(xy+z^2)^n,z^n> in the polynomial ring R=Q[x,y,z]. In her master's thesis [Y], Yao gives a Groebner basis G for q_n and proves that q_n+I_n contain in (q_n:m), where m is the maximal ideal <x,y,z> of R and I_n is the monomial ideal (x^k)(y^k)(z^{2k-1})<x^{2k},y^{2k}><x,y>^{k-1} of R. In this thesis, we prove that (q_n:m) and q_n+I_n are indeed equal. In the process of proving this equality, we give a Groebner basis for the ideals q_n+I_n and find the corner elements of the monomial ideal <LM(q_n)>.
For every even integer n=2k, let q_n be the ideal<x^{2n},y^{2n},(xy+z^2)^n,z^n> in the polynomial ring R=Q[x,y,z]. In her master's thesis [Y], Yao gives a Groebner basis G for q_n and proves that q_n+I_n contain in (q_n:m), where m is the maximal ideal <x,y,z> of R and I_n is the monomial ideal (x^k)(y^k)(z^{2k-1})<x^{2k},y^{2k}><x,y>^{k-1} of R. In this thesis, we prove that (q_n:m) and q_n+I_n are indeed equal. In the process of proving this equality, we give a Groebner basis for the ideals q_n+I_n and find the corner elements of the monomial ideal <LM(q_n)>.
For every even integer n=2k, let q_n be the ideal<x^{2n},y^{2n},(xy+z^2)^n,z^n> in the polynomial ring R=Q[x,y,z]. In her master's thesis [Y], Yao gives a Groebner basis G for q_n and proves that q_n+I_n contain in (q_n:m), where m is the maximal ideal <x,y,z> of R and I_n is the monomial ideal (x^k)(y^k)(z^{2k-1})<x^{2k},y^{2k}><x,y>^{k-1} of R. In this thesis, we prove that (q_n:m) and q_n+I_n are indeed equal. In the process of proving this equality, we give a Groebner basis for the ideals q_n+I_n and find the corner elements of the monomial ideal <LM(q_n)>.
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計算colon ideals