Detecting Direct Sums of Tensors and Their Limits
Fuente:
arXiv
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| Autores principales: | , , |
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| Formato: | Preprint |
| Publicado: |
2025
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| Acceso en línea: | |
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| _version_ | 1866918232318803968 |
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| author | Canino, S. Flavi, C. Jelisiejew, J. |
| author_facet | Canino, S. Flavi, C. Jelisiejew, J. |
| contents | We generalize Mammana's classification of limits of direct sums to more than two factors. We also extend it from polynomials to arbitrary Segre-Veronese format, generalising and unifying results of Buczyńska-Buczyński-Kleppe-Teitler, Hwang, Wang, and Wilson. Remarkably, in such much more general setup it is still possible to characterise the possible limits. Our proofs are direct and based on the theory of centroids, in particular avoiding the delicate Betti number arguments. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2512_05215 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Detecting Direct Sums of Tensors and Their Limits Canino, S. Flavi, C. Jelisiejew, J. Algebraic Geometry Commutative Algebra 14N07, 15A69, 68Q15 We generalize Mammana's classification of limits of direct sums to more than two factors. We also extend it from polynomials to arbitrary Segre-Veronese format, generalising and unifying results of Buczyńska-Buczyński-Kleppe-Teitler, Hwang, Wang, and Wilson. Remarkably, in such much more general setup it is still possible to characterise the possible limits. Our proofs are direct and based on the theory of centroids, in particular avoiding the delicate Betti number arguments. |
| title | Detecting Direct Sums of Tensors and Their Limits |
| topic | Algebraic Geometry Commutative Algebra 14N07, 15A69, 68Q15 |
| url | https://arxiv.org/abs/2512.05215 |