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| Type | Title | Author | Replies | Last Post |
|---|---|---|---|---|
| Open problem | Giuga's Conjecture on Primality | princeps | 0 | 14 years 11 weeks ago |
| category | prime semiprime | Anonymous | 0 | 14 years 12 weeks ago |
| category | princeps | Anonymous | 0 | 14 years 12 weeks ago |
| category | Lucas numbers | Anonymous | 0 | 14 years 13 weeks ago |
| Open problem | Coloring the Odd Distance Graph | mdevos | 8 | 14 years 13 weeks ago |
| Open problem | Cores of Cayley graphs | Robert Samal | 3 | 14 years 15 weeks ago |
| category | Egyptian fraction | Anonymous | 0 | 14 years 15 weeks ago |
| category | Straus, Ernst G. | Anonymous | 0 | 14 years 15 weeks ago |
| Open problem | Graph product of multifuncoids | porton | 0 | 14 years 18 weeks ago |
| category | graph-product | Anonymous | 0 | 14 years 18 weeks ago |
| Open problem | Atomicity of the poset of multifuncoids | porton | 0 | 14 years 18 weeks ago |
| category | multifuncoid | Anonymous | 0 | 14 years 18 weeks ago |
| Open problem | Atomicity of the poset of completary multifuncoids | porton | 0 | 14 years 18 weeks ago |
| Open problem | Cycle double cover conjecture | mdevos | 3 | 14 years 18 weeks ago |
| Open problem | Upgrading a completary multifuncoid | porton | 0 | 14 years 19 weeks ago |
| Open problem | 4-regular 4-chromatic graphs of high girth | mdevos | 2 | 14 years 20 weeks ago |
| Open problem | Perfect cuboid | tsihonglau | 7 | 14 years 20 weeks ago |
| category | pseudodifference | Anonymous | 0 | 14 years 20 weeks ago |
| forum topic | Upgrade to not second tier | porton | 0 | 14 years 20 weeks ago |
| category | Joret, Gwenaël | Anonymous | 0 | 14 years 22 weeks ago |
| category | graph minors | Anonymous | 0 | 14 years 22 weeks ago |
| category | Barát ,János | Anonymous | 0 | 14 years 22 weeks ago |
| Open problem | Forcing a $K_6$-minor | David Wood | 0 | 14 years 22 weeks ago |
| Open problem | Funcoidal products inside an inward reloid | porton | 0 | 14 years 24 weeks ago |
| Open problem | Distributivity of inward reloid over composition of funcoids | porton | 0 | 14 years 24 weeks ago |
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