simpa only [M.removeLoops_nonloop_iff] using f.image_subset_self
α : Type u_1
M✝ N : Matroid α
e f✝ g : α
I X P D : Set α
M : Matroid α
f : M.removeLoops.parallelClasses.RepFun := ⋯.some
⊢ ⇑⋯.some '' {e | M.Nonloop e} ⊆ {e | M.Nonloop e}
no goals