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[sigma:Set] .​ λ[s:sigma] .​ λ[t:sigma] .​ λ[n:({(t) .​ (s) .​ (sigma)} .​ is ) .​ not ]} .​ <({(s) .​ (t) .​ (sigma)} .​ is ) .​ not > .​ {(λ[x:{(s) .​ (t) .​ (sigma)} .​ is ] .​ {(x) .​ (s) .​ (t) .​ (sigma)} .​ symis ) .​ (n) .​ ({(t) .​ (s) .​ (sigma)} .​ is ) .​ ({(s) .​ (t) .​ (sigma)} .​ is )} .​ th3

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