Module

PrimeToRootsSeparableCoordinates.lean

Nyll.EtaleFundamentalGroups.Inertia.PrimeToRootsSeparableCoordinates
1 declaration indexed from sourceView source ↗

Coordinates of the concrete separable-root comparison

The inverse-system isomorphism uses the literal inclusion at every stage. Taking its proved projection equation and the underlying scalar gives the coefficient law without reopening a residue-field construction.

Declarations

EtaleFundamentalGroups.Inertia.primeToRootsSeparableClosureLimitEquiv_scalar

The full comparison retains the literal included scalar at each exponent.

Source context 3 commands

Surrounding namespaces, section variables, and local commands at this declaration.

namespace EtaleFundamentalGroups.Inertia
open ProCGroups.InverseSystems
universe u v
theorem primeToRootsSeparableClosureLimitEquiv_scalar
    (k : Type u) (E : Type v) [Field k] [Field E] [Algebra k E]
    (n : InvertibleExponent k)
    (x : (primeToRootsSystem k (separableClosure k E)).inverseLimit) :
    ((primeToRootsSystem k E).projection n
      ((primeToRootsSeparableClosureLimitEquiv k E).toFun x)).val.val =
      (((primeToRootsSystem k (separableClosure k E)).projection n x).val.val).val