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Informal description: ""

{λ[x: frac ] .​ λ[y: frac ] .​ λ[i:{(y) .​ (x) .​ ( frac )} .​ is ]} .​ <{(x) .​ (y)} .​ eq > .​ {(i) .​ ((x) .​ refeq ) .​ (y) .​ (x) .​ (λ[t: frac ] .​ {(x) .​ (t)} .​ eq ) .​ ( frac )} .​ isp

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