The unmixed admissible clutter conjecture
The unmixed admissible clutter conjecture
Let be an admissible clutter, and let denote its edge ideal. The clutter is unmixed when all its minimal vertex covers have the same cardinality, and is Cohen–Macaulay when its quotient ring has this property in the standard graded sense. Unmixed admissible clutter conjecture. If is unmixed, then is Cohen–Macaulay. This is suggested by the corresponding Cohen–Macaulay and unmixed criteria for bipartite graphs; the general implication for admissible clutters remains open.
Sources & referencesView supporting material
Primary source
Susan Morey, Enrique Reyes and Rafael H. Villarreal, “Cohen-Macaulay, Shellable and unmixed clutters with a perfect matching of König type”, arXiv:0708.3111 (2007).
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