Theorem: Matroid.rFin.finite_of_basis (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
h : M.rFin X
hI : M.Basis I X
⊢ I.Finite
Tactic:
rwa [← encard_lt_top_iff, hI.encard]
State after:
no goals