Feature #958
New function: multiplicity and dim
Description
multiplicity
and dim
are implemented in cocoa-5.
Bring them to cocoalib.
The names should be MultiplicityQuot(I)
and DimQuot(I)
[for multiplicity(P/I)
and dim(P/I)
respectively]
History
#1 Updated by Anna Maria Bigatti over 7 years ago
- % Done changed from 0 to 80
Done. Still need documentation.
#2 Updated by Anna Maria Bigatti over 7 years ago
- Estimated time set to 3.00 h
#3 Updated by John Abbott over 7 years ago
- Description updated (diff)
#4 Updated by John Abbott over 7 years ago
- Status changed from New to Resolved
Do you plan to add MultiplicityQuot
and DimQuot
to CoCoA-5?
If one computes dim(P/I)
, does that actually create a new quotient ring?
#5 Updated by Anna Maria Bigatti over 7 years ago
John Abbott wrote:
Do you plan to add
MultiplicityQuot
andDimQuot
to CoCoA-5?
If one computesdim(P/I)
, does that actually create a new quotient ring?
I added them to CoCoA-5 and they are used to compute dim(P/I)
. (approx half time)
(They do not create a quotient ring)
#6 Updated by John Abbott over 7 years ago
What exactly does multiplicity do?
I made the mistake of trying to compute multiplicity(I)
instead of multiplicity(P/I)
; CoCoA-5 gave me an integer (not the one I expected) rather than error. Is this correct?
#7 Updated by Anna Maria Bigatti over 7 years ago
John Abbott wrote:
What exactly does multiplicity do?
I made the mistake of trying to compute
multiplicity(I)
instead ofmultiplicity(P/I)
; CoCoA-5 gave me an integer (not the one I expected) rather than error. Is this correct?
Yes: multiplicity is defined for a module (not yet implemented in cocoalib), so also for an ideal.
#8 Updated by Anna Maria Bigatti over 7 years ago
Still to do: non-homogenous input
#9 Updated by Anna Maria Bigatti over 7 years ago
- Target version changed from CoCoALib-0.99550 spring 2017 to CoCoALib-0.99560
#10 Updated by John Abbott over 6 years ago
Should this issue be postponed?
#11 Updated by John Abbott over 6 years ago
- Target version changed from CoCoALib-0.99560 to CoCoALib-0.99600
#12 Updated by Anna Maria Bigatti almost 6 years ago
- Target version changed from CoCoALib-0.99600 to CoCoALib-0.99650 November 2019
Yet to be fixed: non homogeneous input.
(postponed)
#13 Updated by John Abbott almost 5 years ago
- Target version changed from CoCoALib-0.99650 November 2019 to CoCoALib-0.99700
#14 Updated by Anna Maria Bigatti over 4 years ago
- Target version changed from CoCoALib-0.99700 to CoCoALib-0.99800
Yet to be fixed: non homogeneous input.
(postponed again)
#15 Updated by Anna Maria Bigatti over 3 years ago
AnnaM think and close this!
#16 Updated by John Abbott over 2 years ago
Postpone?
#17 Updated by Anna Maria Bigatti over 2 years ago
- Target version changed from CoCoALib-0.99800 to CoCoALib-0.99850
Anna Maria Bigatti wrote:
Yet to be fixed: non homogeneous input.
(postponed again)
and again
#18 Updated by Anna Maria Bigatti 4 months ago
- Target version changed from CoCoALib-0.99850 to CoCoALib-0.99880