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citations	visibility	version 1	version 1	(static HELM directory)	helena

Informal description: ""

{λ[sigma:Set] .​ λ[s0:(sigma) .​ set ] .​ λ[s:sigma] .​ λ[ses0:{(s0) .​ (s) .​ (sigma)} .​ esti ]} .​ <{(s0) .​ (sigma)} .​ nonempty > .​ {(ses0) .​ (s) .​ (λ[x:sigma] .​ {(s0) .​ (x) .​ (sigma)} .​ esti ) .​ (sigma)} .​ somei

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