| Some definitions of interest. |
|
dfs | Def dfs(the_obj;s;i) == if member-paren(x,y.the_obj.eq(x,y);i;s) s else [inl(i) / (the_obj.eacc(( s',j. dfs(the_obj;s';j)),[inr(i) / s],i))] fi (recursive) |
| | Thm* For any graph
the_obj:GraphObject(the_graph), s:Traversal, i:V. dfs(the_obj;s;i) Traversal |
|
graphobj | Def GraphObject(the_graph) == eq:Vertices(the_graph) Vertices(the_graph)   ( x,y:Vertices(the_graph). (eq(x,y))  x = y) (eacc:( T:Type. (T Vertices(the_graph) T) T Vertices(the_graph) T) ( T:Type, s:T, x:Vertices(the_graph), f:(T Vertices(the_graph) T). L:Vertices(the_graph) List. ( y:Vertices(the_graph). x-the_graph- > y  (y L)) & eacc(f,s,x) = list_accum(s',x'.f(s',x');s;L)) (vacc:( T:Type. (T Vertices(the_graph) T) T T) ( T:Type, s:T, f:(T Vertices(the_graph) T). L:Vertices(the_graph) List. no_repeats(Vertices(the_graph);L) & ( y:Vertices(the_graph). (y L)) & vacc(f,s) = list_accum(s',x'.f(s',x');s;L)) Top)) |
| | Thm* the_graph:Graph. GraphObject(the_graph) Type{i'} |
|
traversal | Def traversal(G) == (Vertices(G)+Vertices(G)) List |
| | Thm* For any graph
Traversal Type |
|
gr_v | Def Vertices(t) == 1of(t) |
| | Thm* t:Graph. Vertices(t) Type |
|
graph | Def Graph == v:Type e:Type (e v v) Top |
| | Thm* Graph Type{i'} |
|
gro_vacc | Def t.vacc == 1of(2of(2of(2of(2of(t))))) |
| | Thm* For any graph
t:GraphObject(the_graph), T:Type. t.vacc (T V T) T T |