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Informal description: ""

{λ[sigma:Set] .​ λ[p:∀[x:sigma] .​ Prop] .​ λ[s:{(p) .​ (sigma)} .​ some ] .​ λ[x:Prop] .​ λ[i:∀[y:sigma] .​ {(x) .​ ((y) .​ p)} .​ imp ] .​ λ[n:(x) .​ not ] .​ λ[t:sigma]} .​ <((t) .​ p) .​ not > .​ {((t) .​ i) .​ (n) .​ (x) .​ ((t) .​ p)} .​ th3

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