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Theorems · Definition · number theory

NumberField.mixedEmbedding.fundamentalCone.idealSetEquiv

(K : Type u_1) →
  [inst : Field K] →
    [inst_1 : NumberField K] →
      (J : ↥(nonZeroDivisors (Ideal (NumberField.RingOfIntegers K)))) →
        ↑(NumberField.mixedEmbedding.fundamentalCone.idealSet K J) ≃
          ↑{a | ↑(NumberField.mixedEmbedding.fundamentalCone.preimageOfMemIntegerSet a) ∈ ↑↑J}

The map idealSetMap is actually an equiv between idealSet K J and the elements of integerSet K whose preimage lies in J.

Defined in
Mathlib.NumberTheory.NumberField.CanonicalEmbedding.FundamentalCone
Cited by
4 results in Mathlib
Foundations
Depth 338 from the axioms · uses propext, Classical.choice, Quot.sound
Assumes
FieldNumberField

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