(13steps total) PrintForm Definitions Lemmas graph 1 2 Sections Graphs Doc

At: dfsl-traversal-nil 3 4 1
1. the_graph: Graph
2. j: Vertices(the_graph)
3. y: Vertices(the_graph)
4. (y nil)
5. y-the_graph- > *j
(inl(j) nil)
By: ObviousContradiction [-2]
Generated subgoals:

None

About:
nilunioninl

(13steps total) PrintForm Definitions Lemmas graph 1 2 Sections Graphs Doc