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Informal description: ""

λ[x: nat ] .​ <(x) .​ prop4 > .​ {(x) .​ (λ[y: nat ] .​ λ[u:(y) .​ prop4 ] .​ {(u) .​ (y)} .​ t25 ) .​ ( t14 ) .​ (λ[y: nat ] .​ (y) .​ prop4 )} .​ induction

Validation parameters: sort hierarchy = "Z2", kernel options = ""