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primadec, primedec

primadec(plist,vlist)
primedec(plist,vlist)
:: イデアルの分解
return
plist
多項式リスト
vlist
変数リスト
[84] load("primdec")$
[102] primedec([p*q*x-q^2*y^2+q^2*y,-p^2*x^2+p^2*x+p*q*y,
(q^3*y^4-2*q^3*y^3+q^3*y^2)*x-q^3*y^4+q^3*y^3,
-q^3*y^4+2*q^3*y^3+(-q^3+p*q^2)*y^2],[p,q,x,y]);
[[y,x],[y,p],[x,q],[q,p],[x-1,q],[y-1,p],[(y-1)*x-y,q*y^2-2*q*y-p+q]]
[103] primadec([x,z*y,w*y^2,w^2*y-z^3,y^3],[x,y,z,w]);
[[[x,z*y,y^2,w^2*y-z^3],[z,y,x]],[[w,x,z*y,z^3,y^3],[w,z,y,x]]]
参照
section fctr, sqfr, section 項順序の設定.


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