home	news	documentation	specification		implementation
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[e:{(y) .​ (x)} .​ eq ] .​ λ[f:{(z) .​ (y)} .​ eq ] .​ λ[g:{(u) .​ (z)} .​ eq ]} .​ <{(u) .​ (x)} .​ eq > .​ {({(g) .​ (f) .​ (u) .​ (z) .​ (y)} .​ treq ) .​ (e) .​ (u) .​ (y) .​ (x)} .​ treq

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