# Robert Samal

Type | Post | Author | Replies | Last post |
---|---|---|---|---|

Open problem | r-regular graphs are not uniquely hamiltonian. | Robert Samal | 3 | 50 weeks 5 days ago |

Open problem | Graceful Tree Conjecture | kintali | 13 | 2 years 27 weeks ago |

Open problem | Hedetniemi's Conjecture | mdevos | 5 | 3 years 14 weeks ago |

Open problem | Steinberg's conjecture | fhavet | 1 | 6 years 38 weeks ago |

forum topic | Give us your suggestions! | md | 17 | 10 years 32 weeks ago |

Open problem | Cores of Cayley graphs | Robert Samal | 3 | 11 years 14 weeks ago |

Open problem | Star height problem | porton | 1 | 11 years 23 weeks ago |

forum topic | Question about 'solving' something | niekeaerts | 3 | 11 years 28 weeks ago |

Open problem | Strong 5-cycle double cover conjecture | arthur | 8 | 11 years 28 weeks ago |

Open problem | Petersen coloring conjecture | mdevos | 2 | 11 years 28 weeks ago |

Open problem | Characterizing (aleph_0,aleph_1)-graphs | mdevos | 2 | 11 years 28 weeks ago |

Open problem | Barnette's Conjecture | Robert Samal | 1 | 11 years 44 weeks ago |

Open problem | Hirsch Conjecture | Robert Samal | 4 | 11 years 48 weeks ago |

Open problem | Complexity of square-root sum | abie | 5 | 11 years 49 weeks ago |

Open problem | Seymour's Second Neighbourhood Conjecture | nkorppi | 5 | 12 years 12 weeks ago |

Open problem | Real roots of the flow polynomial | mdevos | 2 | 12 years 25 weeks ago |

Open problem | Star chromatic index of complete graphs | Robert Samal | 0 | 12 years 29 weeks ago |

category | star coloring | Robert Samal | 0 | 12 years 29 weeks ago |

category | edge coloring | Robert Samal | 0 | 12 years 29 weeks ago |

category | Dvorak, Zdenek | Robert Samal | 0 | 12 years 29 weeks ago |

Open problem | Star chromatic index of cubic graphs | Robert Samal | 0 | 12 years 29 weeks ago |

Open problem | Co-separability of filter objects | porton | 6 | 12 years 39 weeks ago |

forum topic | Maintaining questions in a subject area | rybu | 4 | 12 years 40 weeks ago |

Open problem | The robustness of the tensor product | ormeir | 4 | 13 years 16 weeks ago |

Open problem | Schanuel's Conjecture | Charles | 3 | 13 years 20 weeks ago |