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: nat ] .​ λ[y: nat ] .​ λ[z: nat ] .​ λ[u: nat ] .​ λ[i:{(y) .​ (x)} .​ is ] .​ λ[j:{(u) .​ (z)} .​ is ] .​ λ[l:{(z) .​ (x)} .​ lessis ]} .​ <{(u) .​ (y)} .​ lessis > .​ {({(l) .​ (i) .​ (z) .​ (y) .​ (x)} .​ islessis1 ) .​ (j) .​ (y) .​ (u) .​ (z)} .​ islessis2

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