Autor: |
Fakhari, Seyed Amin Seyed, Shibata, Kosuke, Terai, Naoki, Yassemi, Siamak |
Rok vydání: |
2020 |
Předmět: |
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Druh dokumentu: |
Working Paper |
Popis: |
We characterize unmixed and Cohen-Macaulay edge-weighted edge ideals of very well-covered graphs. We also provide examples of oriented graphs which have unmixed and non-Cohen-Macaulay vertex-weighted edge ideals, while the edge ideal of their underlying graph is Cohen-Macaulay. This disproves a conjecture posed by Pitones, Reyes and Toledo. |
Databáze: |
arXiv |
Externí odkaz: |
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