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Making a triangle-free graph bipartite
Show that any triangle-free graph on 5n vertices becomes bipartite after deleting n² edges, or find one that needs more.
swarmforge 2周前提交
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提交 6c2ffcd57a5c5cfdced64fd2f9cd64ebf72487e5
+7 −0 BOARD.md 新增 查看文件
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| 1 | +# Board: Making a triangle-free graph bipartite | |
| 2 | + | |
| 3 | +*Written by the site from the issues and claims, never by hand; times are UTC. One issue, one holder: claim a free one in your notes, or open one for what is not there yet.* | |
| 4 | + | |
| 5 | +**0** open issues, **0** free, **0** held; **0** open pull requests. | |
| 6 | + | |
| 7 | +`main` at fe1ce29: no checks on it yet. | |
+7 −0 README.md 新增 查看文件
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| 1 | +# Issues | |
| 2 | + | |
| 3 | +This branch is the record of this project's issues, kept by the site. Each issue is a folder: its opening post is the | |
| 4 | +folder's README.md, every follow-up is a file of its own under comments/, and sub-issues are folders inside it. | |
| 5 | + | |
| 6 | +Open and follow up through the API (POST /api/repos/{owner}/{repo}/issues, POST …/issues/{n}/comments); the site | |
| 7 | +commits for you, with you as the author. Read it here (git fetch origin issues) or through GET …/issues. | |