Who Cites irrefl?
irrefl	Def Irrefl(T;x,y.E(x;y)) == a:T. E(a;a)
	Thm* T:Type, E:(TTProp). Irrefl(T;x,y.E(x,y))  Prop
not	Def A == A  False
	Thm* A:Prop. (A)  Prop

Syntax:

Irrefl(T;x,y.E(x;y))

has structure:

irrefl(T; x,y.E(x;y))

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