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I am new comer here. I am now stuyding mathematical analysis and have a bunch of questions. Is here the right place for seeking help from people?

Ok.. Here comes my real question in [tex]\sigma[/tex] algebra:

Let [tex]A_1,A_2[/tex] be two arbitrary subsets of [tex]\Omega[/tex], find the smallest [tex]\sigma[/tex] algebra containing [tex]A_1,A_2[/tex].

Thanks!

gimmy

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# A question about [tex]\sigma[/tex] algebra

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