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Cohen-Macaulay modifications of the vertex cover ideal of a graph. (English) Zbl 1513.13002

Summary: We study when the modifications of the Cohen-Macaulay vertex cover ideal of a graph are Cohen-Macaulay.

MSC:

13A02 Graded rings
13D02 Syzygies, resolutions, complexes and commutative rings
13P10 Gröbner bases; other bases for ideals and modules (e.g., Janet and border bases)
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