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foreword	milestones	version 2	version 2	(background - core - applications)	library	(static LDDL directory)
citations	visibility	version 1	version 1	(static HELM directory)	helena

Informal description: ""

{λ[x: frac ] .​ λ[y: frac ] .​ λ[z: frac ] .​ λ[u: frac ] .​ λ[l:{(y) .​ (x)} .​ lesseq ] .​ λ[e:{(z) .​ (x)} .​ eq ] .​ λ[f:{(u) .​ (y)} .​ eq ]} .​ <{(u) .​ (z)} .​ lesseq > .​ {(λ[t:{(y) .​ (x)} .​ eq ] .​ {(t) .​ (f) .​ (e) .​ (l) .​ (u) .​ (z) .​ (y) .​ (x)} .​ t2 ) .​ (λ[t:{(y) .​ (x)} .​ lessf ] .​ {(t) .​ (f) .​ (e) .​ (l) .​ (u) .​ (z) .​ (y) .​ (x)} .​ t1 ) .​ (l) .​ ({(u) .​ (z)} .​ lesseq ) .​ ({(y) .​ (x)} .​ eq ) .​ ({(y) .​ (x)} .​ lessf )} .​ orapp

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