Overview Objects Functionality Examples Applications	Groebner Bases For Left And Two-sided Ideals - Part2 ideal I3=e3,f3,h3-4h; ideal L3=std(I3); L3; ==> L3[1]=h3-4h L3[2]=fh2-2fh L3[3]=f3 L3[4]=eh2+2eh L3[5]=6efh-h3-3h2-2h L3[6]=e3 ideal T3=system("twostd",I3); T3; ==> T3[1]=h3-4h T3[2]=fh2-2fh T3[3]=f2h-2f2 T3[4]=f3 T3[5]=eh2+2eh T3[6]=4efh-h3-2h2 T3[7]=ef2-fh T3[8]=e2h+2e2 T3[9]=e2f-eh-2e T3[10]=e3 We see that I3 is not a two-sided ideal. Back to the parent example
Lille, 08-07-02	http://www.singular.uni-kl.de