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Informal description: ""

{λ[x0: rat ] .​ λ[y0: rat ] .​ λ[l:{(y0) .​ (x0)} .​ lessis ]} .​ <({(y0) .​ (x0)} .​ more ) .​ not > .​ {(l) .​ ({(y0) .​ (x0)} .​ satz81b ) .​ ({(y0) .​ (x0)} .​ less ) .​ ({(y0) .​ (x0)} .​ more ) .​ ({(y0) .​ (x0)} .​ is )} .​ th9

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