Opened 6 years ago
Closed 6 years ago
#14128 closed defect (fixed)
Very bad mistakes in linear_arboricity
Reported by: | ncohen | Owned by: | jason, ncohen, rlm |
---|---|---|---|
Priority: | major | Milestone: | sage-5.8 |
Component: | graph theory | Keywords: | |
Cc: | dcoudert | Merged in: | sage-5.8.beta1 |
Authors: | Nathann Cohen | Reviewers: | David Coudert |
Report Upstream: | N/A | Work issues: | |
Branch: | Commit: | ||
Dependencies: | Stopgaps: |
Description
linear_arboricity
has a parameter k
which appears to define the number of colors, but does not. This patch renames is to plus_one
. Plus the function did not compute the decomposition with a minimum number of colors.
Plus Andrew Juell reported "a counter example to a very old conjecture" which turns out to be a Sage bug ! Too bad :-)
Nathann
Attachments (1)
Change History (7)
comment:1 Changed 6 years ago by
- Status changed from new to needs_review
comment:2 Changed 6 years ago by
- Reviewers set to David Coudert
- Status changed from needs_review to needs_work
comment:3 Changed 6 years ago by
- Status changed from needs_work to needs_review
What about that ? :-)
Nathann
Changed 6 years ago by
comment:5 Changed 6 years ago by
Thaaaaaaaaaaaaaaanks !!
Nathann
comment:6 Changed 6 years ago by
- Merged in set to sage-5.8.beta1
- Resolution set to fixed
- Status changed from positive_review to closed
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The patch is working but you could change the following text
plus_one
` (integer) -- the number of colors to use."