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Informal description: ""

{λ[x: nat ] .​ λ[y: nat ] .​ λ[p:{(y) .​ (x)} .​ prop1 ]} .​ <{(({(y) .​ (x)} .​ pl ) .​ suc ) .​ ((y) .​ suc )} .​ nis > .​ {(p) .​ ({(y) .​ (x)} .​ pl ) .​ (y)} .​ satz1

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