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# Sigma-Algebra : Proof

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We consider the sigma-algebra on the set of real numbers R which is defined by all singletons. Prove that this sigma-algebra is the same as...
(Please see the attachment for the full question.)

We consider the sigma-algebra on the set of real numbers R which is defined by all singletons. Prove that this sigma-algebra is the same as
T = {A C R : A or Ac is at most countable}.

https://brainmass.com/math/algebra/sigma-algebra-proof-13163

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We consider the sigma-algebra on the set of real numbers R which is defined by all singletons. Prove that this sigma-algebra is the same as (please see the attached file)
A or ...

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