Who Cites fun-graph?
fun-graph	Def Graph(a:A -- > f(a;b) | b:B) == < vertices = A, edges = AB, incidence = < a,b > . < a,f(a;b) > >
pi2	Def 2of(t) == t.2
	Thm* A:Type, B:(AType), p:(a:AB(a)). 2of(p) B(1of(p))
pi1	Def 1of(t) == t.1
	Thm* A:Type, B:(AType), p:(a:AB(a)). 1of(p) A
mkgraph	Def < vertices = v, edges = e, incidence = f > == < v,e,f,o >
	Thm* v,e:Type, f:(evv), o:Top. < vertices = v, edges = e, incidence = f > Graph

Syntax:

Graph(a:A -- > f(a;b) | b:B)

has structure:

fun-graph(A; B; a,b.f(a;b))

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