Opened 10 years ago

Closed 10 years ago

#593 closed bug (fixed)

bug in radicalZ or primdecZ

Reported by: kroeker@… Owned by: somebody
Priority: minor Milestone: 4-1-0 and higher
Component: singular-libs Version: 4-0-0
Keywords: bug in radicalZ or primdecZ Cc:

Description

Hello,

there is either a bug in radicalZ or primdecZ.

Example:

LIB("primdecint.lib");
ring rng = integer,(x, y, z),dp;
ideal j = 2*x, y*z+4, x*z, 2*y^2-6*z^2, 3*z^3+4*y;

def rJ = radicalZ(j);

primdecZ(rJ);


primdecZ output:

[1]:
   [1]:
      _[1]=x
      _[2]=y*z+4
      _[3]=y^2-3*z^2
      _[4]=3*z^3+4*y
   [2]:
      _[1]=x
      _[2]=y*z+4
      _[3]=y^2-3*z^2
      _[4]=3*z^3+4*y
[2]:
   [1]:
      _[1]=2
      _[2]=z
   [2]:
      _[1]=2
      _[2]=z
[3]:
   [1]:
      _[1]=2
      _[2]=y
      _[3]=x
      _[4]=z^3
   [2]:
      _[1]=2
      _[2]=z
      _[3]=y
      _[4]=x

Change History (1)

comment:1 Changed 10 years ago by hannes

Resolution: fixed
Status: newclosed
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