Opened 10 years ago
Closed 8 years ago
#552 closed bug (invalid)
bug in primdecEHV?
Reported by: | Owned by: | pfister | |
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Priority: | minor | Milestone: | 4-1-0 and higher |
Component: | singular-libs | Version: | 4-0-0 |
Keywords: | primdecEHV | Cc: |
Description
The output of primdecEHV and primdecGTZ differs sometimes. here are some of the related examples:
LIB("ehv.lib"); ring rng = 0,(x),dp; ideal j = -3*x^2+4*x; list L1 = primdecGTZ(j); L1; list L2 = primdecEHV(j); L2; ideal j = 6*x^2+3*x; list L1 = primdecGTZ(j); L1; list L2 = primdecEHV(j); L2;
the corresponding output is:
. ring rng = 0,(x),dp; > ideal j = -3*x^2+4*x; > . list L1 = primdecGTZ(j); > L1; [1]: [1]: _[1]=x [2]: _[1]=x [2]: [1]: _[1]=3x-4 [2]: _[1]=3x-4 > list L2 = primdecEHV(j); > L2; [1]: [1]: _[1]=3x2-4x [2]: _[1]=3x2-4x > . . j = 6*x^2+3*x; > . list L1 = primdecGTZ(j); > L1; [1]: [1]: _[1]=x [2]: _[1]=x [2]: [1]: _[1]=2x+1 [2]: _[1]=2x+1 > list L2 = primdecEHV(j); > L2; [1]: [1]: _[1]=2x2+x [2]: _[1]=2x2+x
Change History (2)
comment:1 Changed 10 years ago by
Owner: | changed from somebody to pfister |
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comment:2 Changed 8 years ago by
Resolution: | → invalid |
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Status: | new → closed |
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primdecEHV is obsolete: no bug fixes for that.