Root Clusters over Number fields : Inverse Problems and Applications
Fuente:
arXiv
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| Natura: | Preprint |
| Pubblicazione: |
2025
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| _version_ | 1866914595264790528 |
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| author | Jaiswal, Shubham |
| author_facet | Jaiswal, Shubham |
| contents | We develop the theory of root clusters further in this article and give some applications. We introduce some new notions as well as recall earlier notions for field extensions over a perfect base field: root cluster size, its generalization root capacity, its dual notion ascending index and its generalization intersection indicium, and generalization of degree of extension, compositum indicium. We establish our results on the Inverse problems for these generalized notions over number fields which generalizes our earlier results. We give a field theoretic formulation for the concept of minimal generating sets of splitting fields of polynomials which was introduced by the author and Vanchinathan. We present new results as well as generalizations of our earlier results on the cardinalities of minimal generating sets for extensions over number fields. We generalize a result of Drungilas et al. by establishing that a certain family of triplets is compositum feasible over any number field and we also list all the irreducible triplets in this family. We also prove a partial case of a conjecture of Drungilas et al. Our methods for all these problems are Galois theoretic in nature and heavily rely on the known cases of the inverse Galois problem. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2505_20238 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Root Clusters over Number fields : Inverse Problems and Applications Jaiswal, Shubham Number Theory Commutative Algebra Group Theory 11R04, 11R21, 11R32, 12F05, 12F10, 20B35, 20F16 We develop the theory of root clusters further in this article and give some applications. We introduce some new notions as well as recall earlier notions for field extensions over a perfect base field: root cluster size, its generalization root capacity, its dual notion ascending index and its generalization intersection indicium, and generalization of degree of extension, compositum indicium. We establish our results on the Inverse problems for these generalized notions over number fields which generalizes our earlier results. We give a field theoretic formulation for the concept of minimal generating sets of splitting fields of polynomials which was introduced by the author and Vanchinathan. We present new results as well as generalizations of our earlier results on the cardinalities of minimal generating sets for extensions over number fields. We generalize a result of Drungilas et al. by establishing that a certain family of triplets is compositum feasible over any number field and we also list all the irreducible triplets in this family. We also prove a partial case of a conjecture of Drungilas et al. Our methods for all these problems are Galois theoretic in nature and heavily rely on the known cases of the inverse Galois problem. |
| title | Root Clusters over Number fields : Inverse Problems and Applications |
| topic | Number Theory Commutative Algebra Group Theory 11R04, 11R21, 11R32, 12F05, 12F10, 20B35, 20F16 |
| url | https://arxiv.org/abs/2505.20238 |