Barile-Macchia resolutions
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arXiv
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| Format: | Preprint |
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2022
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| _version_ | 1866910740934295552 |
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| author | Chau, Trung Kara, Selvi |
| author_facet | Chau, Trung Kara, Selvi |
| contents | We construct cellular resolutions for monomial ideals via discrete Morse theory. In particular, we develop an algorithm to create homogeneous acyclic matchings and we call the cellular resolutions induced from these matchings Barile-Macchia resolutions. These resolutions are minimal for edge ideals of weighted oriented forests and (most) cycles. As a result, we provide recursive formulas for graded Betti numbers and projective dimension. Furthermore, we compare Barile-Macchia resolutions to those created by Batzies and Welker and some well-known simplicial resolutions. Under certain assumptions, whenever the above resolutions are minimal, so are Barile-Macchia resolutions. |
| format | Preprint |
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arxiv_https___arxiv_org_abs_2211_04640 |
| institution | arXiv |
| publishDate | 2022 |
| record_format | arxiv |
| spellingShingle | Barile-Macchia resolutions Chau, Trung Kara, Selvi Commutative Algebra Combinatorics 13D02, 13F55, 13P20, 13A15, 05E40 We construct cellular resolutions for monomial ideals via discrete Morse theory. In particular, we develop an algorithm to create homogeneous acyclic matchings and we call the cellular resolutions induced from these matchings Barile-Macchia resolutions. These resolutions are minimal for edge ideals of weighted oriented forests and (most) cycles. As a result, we provide recursive formulas for graded Betti numbers and projective dimension. Furthermore, we compare Barile-Macchia resolutions to those created by Batzies and Welker and some well-known simplicial resolutions. Under certain assumptions, whenever the above resolutions are minimal, so are Barile-Macchia resolutions. |
| title | Barile-Macchia resolutions |
| topic | Commutative Algebra Combinatorics 13D02, 13F55, 13P20, 13A15, 05E40 |
| url | https://arxiv.org/abs/2211.04640 |