intro hd
case mpr.intro.intro.intro.mk.intro.right
V : Type u_1
G' : Digraph V
s : Set (V × V)
v w : V
h : (v, w) ∈ s
hs : s ⊆ edgeSet G'
⊢ deleteEdges G' s ≠ G'
case mpr.intro.intro.intro.mk.intro.right
V : Type u_1
G' : Digraph V
s : Set (V × V)
v w : V
h : (v, w) ∈ s
hs : s ⊆ edgeSet G'
hd : deleteEdges G' s = G'
⊢ False