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Informal description: ""

{λ[sigma:Set] .​ λ[p:∀[x:sigma] .​ Prop] .​ λ[s:sigma] .​ λ[sp:(s) .​ p] .​ λ[t:sigma] .​ λ[tp:(t) .​ p] .​ λ[i:{(t) .​ (s) .​ (sigma)} .​ is ]} .​ <{({(tp) .​ (t) .​ (p) .​ (sigma)} .​ out ) .​ ({(sp) .​ (s) .​ (p) .​ (sigma)} .​ out ) .​ ({(p) .​ (sigma)} .​ ot )} .​ is > .​ {(i) .​ ({(tp) .​ (t) .​ (p) .​ (sigma)} .​ otax2 ) .​ (t) .​ ({(sp) .​ (s) .​ (p) .​ (sigma)} .​ otax2 ) .​ (s) .​ ({(p) .​ (sigma)} .​ otax1 ) .​ (λ[x:{(p) .​ (sigma)} .​ ot ] .​ {(x) .​ (p) .​ (sigma)} .​ in ) .​ (sigma) .​ ({(p) .​ (sigma)} .​ ot )} .​ isinv

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