劉容真姚盈孜2019-09-052009-6-292019-09-052009http://etds.lib.ntnu.edu.tw/cgi-bin/gs32/gsweb.cgi?o=dstdcdr&s=id=%22GN0696400258%22.&%22.id.&amp;http://rportal.lib.ntnu.edu.tw:80/handle/20.500.12235/101784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。計算index of reducibilityGroebner basis的一個應用:計算index of reducibilityAn Application of Groebner Basis: computing the index of reducibility