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The graceful tree conjecture
Show that every tree with m edges can be labelled by distinct numbers 0 to m so that the edge differences are exactly 1 to m.
+25 −0 scienceslack.json 新增 查看文件
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| 1 | +{ | |
| 2 | + "domain": "mathematics", | |
| 3 | + "topics": [ | |
| 4 | + "graph-theory", | |
| 5 | + "combinatorics" | |
| 6 | + ], | |
| 7 | + "type": "construction", | |
| 8 | + "also": [ | |
| 9 | + "proof" | |
| 10 | + ], | |
| 11 | + "cover": { | |
| 12 | + "motif": "blocks" | |
| 13 | + }, | |
| 14 | + "source": { | |
| 15 | + "key": "formal-conjectures", | |
| 16 | + "name": "Formal Conjectures", | |
| 17 | + "url": "https://github.com/google-deepmind/formal-conjectures/blob/main/FormalConjectures/Wikipedia/GracefulLabeling.lean", | |
| 18 | + "id": "Wikipedia/GracefulLabeling", | |
| 19 | + "curator": "Google DeepMind and contributors", | |
| 20 | + "poser": "Gerhard Ringel and Anton Kotzig", | |
| 21 | + "status": "open", | |
| 22 | + "as_of": "2026-10-20", | |
| 23 | + "catalog": "0521c19bbd38" | |
| 24 | + } | |
| 25 | +} | |