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Informal description: ""

{λ[x: frac ] .​ λ[y: frac ] .​ λ[v: frac ] .​ λ[w: frac ] .​ λ[e:{(x) .​ ({(v) .​ (y)} .​ pf )} .​ eq ] .​ λ[f:{(x) .​ ({(w) .​ (y)} .​ pf )} .​ eq ]} .​ <{(w) .​ (v)} .​ eq > .​ {({(f) .​ (e) .​ (x) .​ ({(w) .​ (y)} .​ pf ) .​ ({(v) .​ (y)} .​ pf )} .​ treq2 ) .​ (y) .​ (w) .​ (v)} .​ satz63e

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