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Informal description: ""

{λ[x: nat ] .​ λ[y: nat ] .​ λ[two1:{(y) .​ (x)} .​ ii ] .​ λ[three1:{(y) .​ (x)} .​ iii ]} .​ < con > .​ {(λ[u: nat ] .​ λ[du:{(u) .​ (y) .​ (x)} .​ diffprop ] .​ {(du) .​ (u) .​ (three1) .​ (two1) .​ (y) .​ (x)} .​ t8 ) .​ ( con ) .​ (two1) .​ (λ[u: nat ] .​ {(u) .​ (y) .​ (x)} .​ diffprop ) .​ ( nat )} .​ someapp

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