Source-pinned research

Research proof index

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Project-declaredLean 4.32.0

Valued adic Completion Semialg Hom

IsDedekindDomain.HeightOneSpectrum.Extension.valued_adicCompletionSemialgHom

Plain-language statement

The local ramification index for the extension L_w/K_v is equal to the global ramification index for the extension w/v. In other words, if x in K_v and i:K_v->L_w then w(i(x))=v(x)^e where e is computed globally.

number theoryarithmetic geometryFermat's Last Theorem

Source project: Fermat's Last Theorem

Person-level attribution pending.

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Project-declaredLean 4.32.0

Int Valuation comap

IsDedekindDomain.HeightOneSpectrum.intValuation_comap

Plain-language statement

If w | v then for a ∈ A we have w(a)=v(a)^e where e is the ramification index.

number theoryarithmetic geometryFermat's Last Theorem

Source project: Fermat's Last Theorem

Person-level attribution pending.

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