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[l:{(u) .​ (z)} .​ lessf ]} .​ <{({(y) .​ (u)} .​ tf ) .​ ({(x) .​ (z)} .​ tf )} .​ lessf > .​ {({(l) .​ (e) .​ (u) .​ (z) .​ (y) .​ (x)} .​ satz72j ) .​ ({(u) .​ (y)} .​ comtf ) .​ ({(z) .​ (x)} .​ comtf ) .​ ({(y) .​ (u)} .​ tf ) .​ ({(u) .​ (y)} .​ tf ) .​ ({(x) .​ (z)} .​ tf ) .​ ({(z) .​ (x)} .​ tf )} .​ eqlessf12

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