Nuprl - Proof: dfsl-properties 2 1 3 2 1 2

(158steps total) PrintForm Definitions Lemmas graph 1 3 Sections Graphs Doc

1. the_graph: Graph
2. the_obj: GraphObject(the_graph)
3. L: Vertices(the_graph) List
4. L1: Vertices(the_graph) List
5. s: traversal(the_graph)
6. i: Vertices(the_graph)
7. paren(Vertices(the_graph);s)
8. no_repeats(Vertices(the_graph)+Vertices(the_graph);s)
9. df-traversal(the_graph;s)
10. i:Vertices(the_graph). (inl(i) s) L1-the_graph- > *i
11. (i:Vertices(the_graph). L1-the_graph- > *i non-trivial-loop(the_graph;i)) (L1@0,L2:Vertices(the_graph) List. L1 = (L1@0 @ L2) (s1,s2:traversal(the_graph). s = (s2 @ s1) traversal(the_graph) & paren(Vertices(the_graph);s1) & paren(Vertices(the_graph);s2) & (j:Vertices(the_graph). ((inl(j) s1) L1@0-the_graph- > *j) & ((inl(j) s2) L2-the_graph- > *j & L1@0-the_graph- > *j))))
12. (inl(i) s)
13. s2: traversal(the_graph)
14. l_disjoint(Vertices(the_graph)+Vertices(the_graph);s2;s)
15. paren(Vertices(the_graph);s2)
16. no_repeats(Vertices(the_graph)+Vertices(the_graph);s2)
17. (inr(i) s2)
18. j:Vertices(the_graph). (inr(j) s2) i-the_graph- > *j
19. df-traversal(the_graph;([inl(i)] @ s2 @ [inr(i)]) @ s)
20. i@0:Vertices(the_graph). L1 @ [i]-the_graph- > *i@0 non-trivial-loop(the_graph;i@0)

L1@0,L2:Vertices(the_graph) List. (L1 @ [i]) = (L1@0 @ L2) (s1,s2@0:traversal(the_graph). (([inl(i)] @ s2 @ [inr(i)]) @ s) = (s2@0 @ s1) traversal(the_graph) & paren(Vertices(the_graph);s1) & paren(Vertices(the_graph);s2@0) & (j:Vertices(the_graph). ((inl(j) s1) L1@0-the_graph- > *j) & ((inl(j) s2@0) L2-the_graph- > *j & L1@0-the_graph- > *j)))

By: (Analyze 11) THENA ((Auto THEN BackThruSomeHyp THEN (RWO Thm* For any graph A,B:V List, i:V. A @ B-- > *i A-- > *i B-- > *i 0)) THEN OrLeft)

Generated subgoal:

1 11. (inl(i) s)
12. s2: traversal(the_graph)
13. l_disjoint(Vertices(the_graph)+Vertices(the_graph);s2;s)
14. paren(Vertices(the_graph);s2)
15. no_repeats(Vertices(the_graph)+Vertices(the_graph);s2)
16. (inr(i) s2)
17. j:Vertices(the_graph). (inr(j) s2) i-the_graph- > *j
18. df-traversal(the_graph;([inl(i)] @ s2 @ [inr(i)]) @ s)
19. i@0:Vertices(the_graph). L1 @ [i]-the_graph- > *i@0 non-trivial-loop(the_graph;i@0)
20. L1@0,L2:Vertices(the_graph) List. L1 = (L1@0 @ L2) (s1,s2:traversal(the_graph). s = (s2 @ s1) traversal(the_graph) & paren(Vertices(the_graph);s1) & paren(Vertices(the_graph);s2) & (j:Vertices(the_graph). ((inl(j) s1) L1@0-the_graph- > *j) & ((inl(j) s2) L2-the_graph- > *j & L1@0-the_graph- > *j)))
L1@0,L2:Vertices(the_graph) List. (L1 @ [i]) = (L1@0 @ L2) (s1,s2@0:traversal(the_graph). (([inl(i)] @ s2 @ [inr(i)]) @ s) = (s2@0 @ s1) traversal(the_graph) & paren(Vertices(the_graph);s1) & paren(Vertices(the_graph);s2@0) & (j:Vertices(the_graph). ((inl(j) s1) L1@0-the_graph- > *j) & ((inl(j) s2@0) L2-the_graph- > *j & L1@0-the_graph- > *j))) 134 steps

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(158steps total) PrintForm Definitions Lemmas graph 1 3 Sections Graphs Doc