Theorem: Matroid.conn_eq_conn_inter_ground_left (Matroid/Connectivity.lean)

State before:
α : Type u_1
M✝ : Matroid α
B B' I I' J K X✝ Y✝ : Set α
M : Matroid α
X Y : Set α
⊢ M.conn X Y = M.conn (X ∩ M.E) Y
Tactic:
rw [conn_cl_left, ← cl_inter_ground, ← conn_cl_left]
State after:
no goals