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Informal description: ""

{λ[sigma:Set] .​ λ[r:∀[x:sigma] .​ ∀[y:sigma] .​ Prop] .​ λ[refr1:∀[x:sigma] .​ (x) .​ (x) .​ r] .​ λ[symr1:∀[x:sigma] .​ ∀[y:sigma] .​ ∀[t:(y) .​ (x) .​ r] .​ (x) .​ (y) .​ r] .​ λ[trr1:∀[x:sigma] .​ ∀[y:sigma] .​ ∀[z:sigma] .​ ∀[t:(y) .​ (x) .​ r] .​ ∀[u:(z) .​ (y) .​ r] .​ (z) .​ (x) .​ r] .​ λ[e:{(trr1) .​ (symr1) .​ (refr1) .​ (r) .​ (sigma)} .​ ect ] .​ λ[f:{(trr1) .​ (symr1) .​ (refr1) .​ (r) .​ (sigma)} .​ ect ] .​ λ[s:sigma] .​ λ[see:{({(e) .​ (trr1) .​ (symr1) .​ (refr1) .​ (r) .​ (sigma)} .​ ecect ) .​ (s) .​ (sigma)} .​ esti ] .​ λ[t:sigma] .​ λ[tef:{({(f) .​ (trr1) .​ (symr1) .​ (refr1) .​ (r) .​ (sigma)} .​ ecect ) .​ (t) .​ (sigma)} .​ esti ] .​ λ[i:{(f) .​ (e) .​ ({(trr1) .​ (symr1) .​ (refr1) .​ (r) .​ (sigma)} .​ ect )} .​ is ]} .​ <(t) .​ (s) .​ r> .​ {(tef) .​ (t) .​ ({(i) .​ (see) .​ (s) .​ (f) .​ (e) .​ (trr1) .​ (symr1) .​ (refr1) .​ (r) .​ (sigma)} .​ th4 ) .​ (s) .​ ({(f) .​ (trr1) .​ (symr1) .​ (refr1) .​ (r) .​ (sigma)} .​ th1 ) .​ ({(f) .​ (trr1) .​ (symr1) .​ (refr1) .​ (r) .​ (sigma)} .​ ecect ) .​ (trr1) .​ (symr1) .​ (refr1) .​ (r) .​ (sigma)} .​ th3

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