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Informal description: ""

{λ[x: nat ] .​ λ[y: nat ] .​ λ[z: nat ] .​ λ[l:{(y) .​ (x)} .​ less ] .​ λ[k:{(z) .​ (y)} .​ lessis ]} .​ <{(z) .​ (x)} .​ less > .​ {(λ[u:{(z) .​ (y)} .​ is ] .​ {(l) .​ (u) .​ (x) .​ (z) .​ (y)} .​ isless2 ) .​ (λ[u:{(z) .​ (y)} .​ less ] .​ {(u) .​ (l) .​ (z) .​ (y) .​ (x)} .​ trless ) .​ (k) .​ ({(z) .​ (x)} .​ less ) .​ ({(z) .​ (y)} .​ is ) .​ ({(z) .​ (y)} .​ less )} .​ orapp

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