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An algebra 𝒜 is a σ-algebra iff 𝒜 is closed under countable increasing unions (i.e., if {Ej}1^∞ ⊂𝒜 and E1 ⊂E2 ⊂⋯, then ⋃1^∞ Ej ∈𝒜 ). | Numerade

Answered: Let 2=(1,2,3,4,} and C={{1,2,3}, {4}}. Derive the sigma-algebra generated by C, i.e. that smallest sigma-algebra that contains C. | bartleby