Subfield.relfinrank_eq_finrank_of_le

∀ {E : Type v} [inst : Field E] {A B : Subfield E} (h : A ≤ B),
  A.relfinrank B = Module.finrank ↥A ↥(Subfield.extendScalars h)

If A ≤ B, then Subfield.relfinrank A B is [B : A].

Defined in: Mathlib.FieldTheory.Relrank
Cited by: 0 results in Mathlib
Foundations: Depth 91 from the axioms · uses propext, Classical.choice, Quot.sound
Assumes: Field

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