File talk:Directed graph with back edge.svg
Latest comment: 15 years ago by W.
The edge indicated is not a back edge, it is a forward edge. A back edge connects a vertex to an ancestor in a tree. A directed graph contains a cycle if and only if it has a back edge from a vertex to an ancestor of that vertex in a depth-first tree. Either the arrow should be reversed, or the diagram should be relabelled as a forward edge. -- Silas Davis
Sorry, imo all these arrows' directions are wrong: Sub-Categories point to CATs, not the other way round. Wolfgang (talk) 17:25, 22 November 2008 (UTC)
- That is the way parent/sub categories are created, but I believe it is not the way people commonly conceive of the category system. --pfctdayelise (说什么?) 02:10, 23 November 2008 (UTC)
- Nice to read from you again ;) [a. IP, a while ago ;] although I disagree: The graph is used in a "How-To", therefore imo should rather follow the way a creator of categories should proceed.
- Question: Would you please like to comment on some cleanup-project which I started, a while ago, but where I badly lack feedback, before allowing myself to become "active" in re-categorization and re-naming of some 350 files, plus adding ~100?
- The stuff is at Category talk:Vincent van Gogh and some is at Template_talk:Painting#Hopefully_more_clear_now. In case you'd like to comment on vG-talk, please drop me a note (here or wherever it feels more appropriate). I'm about to create a list of 10-15 definite questions, to clarify, as that vG-Talk page became somewhat "clumsy", meanwhile, which of course is one more reason for the lack of feedback. See, e.g., this. Thanks, Wolfgang (talk) 10:25, 23 November 2008 (UTC)
- Hi Wolfgang :) I am not so active anymore, so I'm not going to weigh in on your debate. You should post at COM:VP if you want more feedback on it. --pfctdayelise (说什么?) 11:13, 23 November 2008 (UTC)
- As I rarely ever remember especially competent feeback from VP:COM's chat, I feel more than just reluctant to ask there. I'm rather looking for quality ~ than quantity feedback. Thanks for answering, nevertheless. Best, Wolfgang (talk) 12:25, 23 November 2008 (UTC)
