Tags: #todo #todo/stub Refs: ?
norm and trace
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norm
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2021-05-24
A Tambara functor is a Green functor with that data of a norm map \(\nm_K^H\), a multiplicative morphism.
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ramification index
The ramification is tame when the ramification indices \(e_{i}\) are all relatively prime to the residue characteristic \(p\) of \(p\), otherwise wild. A finite generically etale extension \(B / A\) of Dedekind domains is tame if and only if the trace \(\operatorname{Tr}: B \rightarrow A\) is surjective. # Results
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Commutative Algebra: Definitions
What are the norm and trace of a module?
- 020 Defiinitions