Question

let X be any non empty set.
let a denote the collection of all subsets of & which are
either finite or Cofinite .
A=& ACX either finite or A is finite}
A is an algebra of subset of X.
Prove that​

Answer 1

Answer:

i $\textit{\large{\pink{\underline{\underline{Step by step Explanation:-}}}}}$[tex]\mathrm{2\ ...∈ F and, by (i), F is closed under finite unions . Similarly ... Let X be a set and B a non-empty collection of subsets of X. The smallest σ– algebra containing all the sets of B is denoted σ(B).