Theorem: Matroid.coe_rk_eq (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
M : Matroid α
inst✝ : M.FiniteRk
⊢ ↑M.rk = M.erk
Tactic:
rw [erk_eq_er_ground, rk_def, coe_r_eq]
State after:
no goals