Opened 7 years ago

Closed 6 years ago

#16404 closed enhancement (duplicate)

logic error in code of _gomory_hu_tree

Reported by: foosterhof Owned by:
Priority: trivial Milestone: sage-duplicate/invalid/wontfix
Component: graph theory Keywords: gomory-hu tree gomory hu
Cc: Merged in:
Authors: Reviewers: Frédéric Chapoton
Report Upstream: N/A Work issues:
Branch: u/foosterhof/ticket/16404 (Commits, GitHub, GitLab) Commit: 217568501d25e3370f546a54e5c2a265298f5d70
Dependencies: Stopgaps:

Status badges

Description

The virtual (fake) vertex g2_v is added to g1, even though I think it makes alot more sense to add it to g2.

As far as I know, it does not create bugs or incorrect results, as add_edge adds the vertex if it does not exist, but it would seem rather unfavourable to keep such an error existent.

Change History (7)

comment:1 Changed 7 years ago by foosterhof

  • Branch set to u/foosterhof/ticket/16404
  • Created changed from 05/27/14 13:40:16 to 05/27/14 13:40:16
  • Modified changed from 05/27/14 13:40:16 to 05/27/14 13:40:16

comment:2 Changed 7 years ago by foosterhof

  • Commit set to 217568501d25e3370f546a54e5c2a265298f5d70
  • Status changed from new to needs_review

New commits:

​2175685Fixed logic error in Gomory-Hu tree algorithm

comment:3 Changed 7 years ago by chapoton

You should try to add a doctest that tests that this change is correct, if possible.

comment:4 Changed 7 years ago by foosterhof

  • Report Upstream changed from N/A to None of the above - read trac for reasoning.

This fix is redundant as I fixed it immediately when fixing ticket #16475. Can thus be closed or removed, or anything the likes.

Florian

comment:5 Changed 7 years ago by vbraun_spam

  • Milestone changed from sage-6.3 to sage-6.4

comment:6 Changed 6 years ago by chapoton

  • Milestone changed from sage-6.4 to sage-duplicate/invalid/wontfix
  • Report Upstream changed from None of the above - read trac for reasoning. to N/A
  • Reviewers set to Frédéric Chapoton
  • Status changed from needs_review to positive_review

ok, then let us say that this is a duplicate

comment:7 Changed 6 years ago by vbraun

  • Resolution set to duplicate
  • Status changed from positive_review to closed
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