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Informal description: ""

{λ[sigma:Set] .​ λ[tau:Set] .​ λ[upsilon:Set] .​ λ[f:Π[x:sigma] .​ tau] .​ λ[g:Π[x:tau] .​ upsilon] .​ λ[bf:{(f) .​ (tau) .​ (sigma)} .​ bijective ] .​ λ[bg:{(g) .​ (upsilon) .​ (tau)} .​ bijective ]} .​ <{(λ[x:sigma] .​ ((x) .​ f) .​ g) .​ (upsilon) .​ (sigma)} .​ bijective > .​ {({(bg) .​ (bf) .​ (g) .​ (f) .​ (upsilon) .​ (tau) .​ (sigma)} .​ t2 ) .​ ({(bg) .​ (bf) .​ (g) .​ (f) .​ (upsilon) .​ (tau) .​ (sigma)} .​ t1 ) .​ ({({(bg) .​ (bf) .​ (g) .​ (f) .​ (upsilon) .​ (tau) .​ (sigma)} .​ h ) .​ (upsilon) .​ (sigma)} .​ surjective ) .​ ({({(bg) .​ (bf) .​ (g) .​ (f) .​ (upsilon) .​ (tau) .​ (sigma)} .​ h ) .​ (upsilon) .​ (sigma)} .​ injective )} .​ andi

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