A density of ramified primes

Chan S, McMeekin C, Milovic D. 2021. A density of ramified primes. Research in Number Theory. 8, 1.

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Author
Chan, StephanieISTA ; McMeekin, Christine; Milovic, Djordjo
Abstract
Let K be a cyclic number field of odd degree over š‘„ with odd narrow class number, such that 2 is inert in š¾/š‘„. We define a family of number fields {š¾(š‘)}š‘, depending on K and indexed by the rational primes p that split completely in š¾/š‘„, in which p is always ramified of degree 2. Conditional on a standard conjecture on short character sums, the density of such rational primes p that exhibit one of two possible ramified factorizations in š¾(š‘)/š‘„ is strictly between 0 and 1 and is given explicitly as a formula in terms of the degree of the extension š¾/š‘„. Our results are unconditional in the cubic case. Our proof relies on a detailed study of the joint distribution of spins of prime ideals.
Publishing Year
Date Published
2021-11-15
Journal Title
Research in Number Theory
Publisher
Springer Nature
Volume
8
Article Number
1
ISSN
eISSN
IST-REx-ID

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Chan S, McMeekin C, Milovic D. A density of ramified primes. Research in Number Theory. 2021;8. doi:10.1007/s40993-021-00295-5
Chan, S., McMeekin, C., & Milovic, D. (2021). A density of ramified primes. Research in Number Theory. Springer Nature. https://doi.org/10.1007/s40993-021-00295-5
Chan, Stephanie, Christine McMeekin, and Djordjo Milovic. ā€œA Density of Ramified Primes.ā€ Research in Number Theory. Springer Nature, 2021. https://doi.org/10.1007/s40993-021-00295-5.
S. Chan, C. McMeekin, and D. Milovic, ā€œA density of ramified primes,ā€ Research in Number Theory, vol. 8. Springer Nature, 2021.
Chan S, McMeekin C, Milovic D. 2021. A density of ramified primes. Research in Number Theory. 8, 1.
Chan, Stephanie, et al. ā€œA Density of Ramified Primes.ā€ Research in Number Theory, vol. 8, 1, Springer Nature, 2021, doi:10.1007/s40993-021-00295-5.
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arXiv 2005.10188

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