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Informal description: ""

{λ[ksi: cut ] .​ λ[x0: rat ] .​ λ[lx:{(x0) .​ (ksi)} .​ lrt ] .​ λ[y0: rat ] .​ λ[uy:{(y0) .​ (ksi)} .​ urt ]} .​ <{(x0) .​ (y0)} .​ more > .​ {({(uy) .​ (y0) .​ (lx) .​ (x0) .​ (ksi)} .​ cutapp2a ) .​ (y0) .​ (x0)} .​ satz83

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