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Informal description: ""

{λ[x: frac ] .​ λ[y: frac ] .​ λ[l:{(y) .​ (x)} .​ lesseq ] .​ λ[v: frac ]} .​ <({(x) .​ ({(v) .​ (y)} .​ pf )} .​ eq ) .​ not > .​ {(λ[t:{(x) .​ ({(v) .​ (y)} .​ pf )} .​ eq ] .​ {(t) .​ (v) .​ (l) .​ (y) .​ (x)} .​ t1 ) .​ ({(l) .​ (y) .​ (x)} .​ satz41d ) .​ ({(y) .​ (x)} .​ moref ) .​ ({(x) .​ ({(v) .​ (y)} .​ pf )} .​ eq )} .​ th3

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