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Informal description: ""

{λ[x: nat ] .​ λ[y: nat ]} .​ <{({(x) .​ (y)} .​ ts ) .​ ({(y) .​ (x)} .​ ts )} .​ is > .​ {(x) .​ (λ[z: nat ] .​ λ[u:{(y) .​ (z)} .​ prop1 ] .​ {(u) .​ (y) .​ (z)} .​ t6 ) .​ ({(y) .​ (x)} .​ t3 ) .​ (λ[z: nat ] .​ {(y) .​ (z)} .​ prop1 )} .​ induction

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