2 # This book is not valid in AUT-QE because [y:'type'] is not allowed
3 # This book is not valid in \lambda\delta < 3 because sort inclusion is not allowed
4 # This book is not valid in \lambda\delta 3 because of two \upsilon-reductions on layer 1
7 @ Delta := [x:[y:'type']'type']<x>x : [x:[y:'type']'type']'type'
8 Omega := <Delta>Delta : 'type'