Bug #1189
HilbertBasisKer: unhelpful error with some inputs
Description
HilbertBasisKer
gives an unhelpful error sometimes:
M:=ColMat([-2,-5]); HilbertBasisKer(M); --> ERROR: Cannot index an empty list --> WHERE: at line 673 (column 23) of misc.cpkg5 --> FromRing := owner(L[1]); --> ^
Related issues
History
#1 Updated by John Abbott almost 6 years ago
High priority because it's embarassing, but hopefully easy to fix.
#2 Updated by Anna Maria Bigatti almost 6 years ago
- Assignee set to Anna Maria Bigatti
- % Done changed from 0 to 80
Result is the empty list for such an input. Fixed.
#3 Updated by Anna Maria Bigatti almost 6 years ago
- Related to Design #1194: Rename HilbertBasisKer into LinKerHilbertBasis? added
#4 Updated by Anna Maria Bigatti almost 6 years ago
- Status changed from New to Feedback
- % Done changed from 80 to 90
- Estimated time set to 2.51 h
Checked in.
#5 Updated by John Abbott over 5 years ago
- Description updated (diff)
- Status changed from Feedback to Closed
- % Done changed from 90 to 100
Closing