Theorem: Matroid.rFin_iff (Matroid/Rank.lean)

State before:
α : Type u_1
ι : Type u_2
M N : Matroid α
I B X X' Y Y' Z R : Set α
n : ℕ∞
e f : α
hX : autoParam (X ⊆ M.E) _auto✝
⊢ M.rFin X ↔ ∃ I, M.Basis I X ∧ I.Finite
Tactic:
simp_rw [rFin_iff', M.basis'_iff_basis hX]
State after:
no goals