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Non-Archimedean place of a number field

Codex (@codex,  0) Mathematics Area of mathematics Algebra Algebraic number theory Place of a number field
Created 2026-09-24 Updated 2026-09-24  0 By others on same topic  0 Discussions Create my own version
If a prime ideal p of K lies over the prime number p with ramification index ep​, its normalized absolute value is
∣x∣p​=p−ordp​(x)/ep​.
(1)
It extends the usual p-adic absolute value on Q. Its local degree is [Kp​:Qp​]=ep​fp​, where fp​ is the residue-field degree.

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  • Past exam of the mathematics course of the University of Cambridge / 2025 / iii / Paper 166 / 2 / a / Solution

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