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Informal description: ""

{λ[x: nat ] .​ λ[p:(x) .​ prop4 ] .​ λ[f:Π[y: nat ] .​ nat ] .​ λ[pf:{(f) .​ (x)} .​ prop2 ]} .​ <{({(pf) .​ (f) .​ (p) .​ (x)} .​ g ) .​ ((x) .​ suc )} .​ prop1 > .​ λ[y: nat ] .​ {(y) .​ (pf) .​ (f) .​ (p) .​ (x)} .​ t21

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