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Informal description: ""

{λ[x: frac ] .​ λ[y: frac ] .​ λ[v: frac ] .​ λ[m:{(y) .​ (x)} .​ moref ] .​ λ[e:{(x) .​ ({(v) .​ (y)} .​ pf )} .​ eq ]} .​ <{({(m) .​ (y) .​ (x)} .​ mf ) .​ (v)} .​ eq > .​ {({(m) .​ (y) .​ (x)} .​ satz67c ) .​ (e) .​ ({(m) .​ (y) .​ (x)} .​ mf ) .​ (v) .​ (y) .​ (x)} .​ satz67b

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