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Informal description: ""

{λ[sigma:Set] .​ λ[s0:sigma] .​ λ[t0:sigma] .​ λ[s:sigma] .​ λ[t:sigma] .​ λ[i:{({(t) .​ (t0) .​ (s0) .​ (sigma)} .​ wb ) .​ ({(s) .​ (t0) .​ (s0) .​ (sigma)} .​ wb ) .​ (sigma)} .​ is ] .​ λ[n:({(t) .​ (s) .​ (sigma)} .​ is ) .​ not ]} .​ <({(t0) .​ (t) .​ (sigma)} .​ is ) .​ not > .​ {({(n) .​ (t) .​ (s) .​ (sigma)} .​ symnotis ) .​ ({(i) .​ ({(t) .​ (t0) .​ (s0) .​ (sigma)} .​ wb ) .​ ({(s) .​ (t0) .​ (s0) .​ (sigma)} .​ wb ) .​ (sigma)} .​ symis ) .​ (s) .​ (t) .​ (t0) .​ (s0) .​ (sigma)} .​ t24

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